diff --git a/apps/agent-provisioning/src/agent-provisioning.module.ts b/apps/agent-provisioning/src/agent-provisioning.module.ts
index ba467e06d..c088be39f 100644
--- a/apps/agent-provisioning/src/agent-provisioning.module.ts
+++ b/apps/agent-provisioning/src/agent-provisioning.module.ts
@@ -4,6 +4,7 @@ import { AgentProvisioningService } from './agent-provisioning.service';
 import { ClientsModule, Transport } from '@nestjs/microservices';
 import { ConfigModule } from '@nestjs/config';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 @Module({
   imports: [
     ConfigModule.forRoot(),
@@ -11,7 +12,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.AGENT_PROVISIONING_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.AGENT_PROVISIONING, process.env.AGENT_PROVISIONING_NKEY_SEED)
         
       }
     ])
diff --git a/apps/agent-provisioning/src/main.ts b/apps/agent-provisioning/src/main.ts
index f0c623640..4002bc54c 100644
--- a/apps/agent-provisioning/src/main.ts
+++ b/apps/agent-provisioning/src/main.ts
@@ -4,13 +4,14 @@ import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { AgentProvisioningModule } from './agent-provisioning.module';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 const logger = new Logger();
 
 async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(AgentProvisioningModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.AGENT_PROVISIONING_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.AGENT_PROVISIONING, process.env.AGENT_PROVISIONING_NKEY_SEED)
   });
   app.useGlobalFilters(new HttpExceptionFilter());
 
diff --git a/apps/agent-service/src/agent-service.module.ts b/apps/agent-service/src/agent-service.module.ts
index 413b8d1c3..c2fca43bd 100644
--- a/apps/agent-service/src/agent-service.module.ts
+++ b/apps/agent-service/src/agent-service.module.ts
@@ -11,6 +11,7 @@ import { ConnectionRepository } from 'apps/connection/src/connection.repository'
 import { CacheModule } from '@nestjs/cache-manager';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { UserActivityRepository } from 'libs/user-activity/repositories';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -19,7 +20,7 @@ import { UserActivityRepository } from 'libs/user-activity/repositories';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.AGENT_SERVICE_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.AGENT_SERVICE, process.env.AGENT_SERVICE_NKEY_SEED)
       }
     ]),
     CommonModule,
diff --git a/apps/agent-service/src/main.ts b/apps/agent-service/src/main.ts
index 0d72b8442..ae665b7d5 100644
--- a/apps/agent-service/src/main.ts
+++ b/apps/agent-service/src/main.ts
@@ -14,7 +14,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(AgentServiceModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.AGENT_SERVICE_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.AGENT_SERVICE, process.env.AGENT_SERVICE_NKEY_SEED)
 
   });
   app.useGlobalFilters(new HttpExceptionFilter());
diff --git a/apps/api-gateway/src/agent-service/agent-service.module.ts b/apps/api-gateway/src/agent-service/agent-service.module.ts
index 0c3484cc7..0d24cd9da 100644
--- a/apps/api-gateway/src/agent-service/agent-service.module.ts
+++ b/apps/api-gateway/src/agent-service/agent-service.module.ts
@@ -7,6 +7,7 @@ import { ConfigModule } from '@nestjs/config';
 import { AgentController } from './agent-service.controller';
 import { AgentService } from './agent-service.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -16,7 +17,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.AGENT_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       },
       CommonModule
diff --git a/apps/api-gateway/src/app.module.ts b/apps/api-gateway/src/app.module.ts
index e6d0e726b..c7f3b00f9 100644
--- a/apps/api-gateway/src/app.module.ts
+++ b/apps/api-gateway/src/app.module.ts
@@ -26,7 +26,7 @@ import * as redisStore from 'cache-manager-redis-store';
 import { WebhookModule } from './webhook/webhook.module';
 import { UtilitiesModule } from './utilities/utilities.module';
 import { NotificationModule } from './notification/notification.module';
-import { GeoLocationModule } from './geo-location/geo-location.module';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -35,7 +35,7 @@ import { GeoLocationModule } from './geo-location/geo-location.module';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.API_GATEWAY_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       }
     ]),
     AgentModule,
diff --git a/apps/api-gateway/src/authz/authz.module.ts b/apps/api-gateway/src/authz/authz.module.ts
index 7c1a03779..bcaca9b44 100644
--- a/apps/api-gateway/src/authz/authz.module.ts
+++ b/apps/api-gateway/src/authz/authz.module.ts
@@ -19,6 +19,7 @@ import { VerificationService } from '../verification/verification.service';
 import { EcosystemService } from '../ecosystem/ecosystem.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { OrganizationService } from '../organization/organization.service';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -31,7 +32,7 @@ import { OrganizationService } from '../organization/organization.service';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.AUTH_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       },
       CommonModule
     ]),
diff --git a/apps/api-gateway/src/connection/connection.module.ts b/apps/api-gateway/src/connection/connection.module.ts
index bc2b5be51..f8047bfd3 100644
--- a/apps/api-gateway/src/connection/connection.module.ts
+++ b/apps/api-gateway/src/connection/connection.module.ts
@@ -3,6 +3,7 @@ import { ConnectionController } from './connection.controller';
 import { ConnectionService } from './connection.service';
 import { Module } from '@nestjs/common';
 import { ClientsModule, Transport } from '@nestjs/microservices';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
     imports: [
@@ -11,7 +12,7 @@ import { ClientsModule, Transport } from '@nestjs/microservices';
             {
                 name: 'NATS_CLIENT',
                 transport: Transport.NATS,
-                options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+                options: getNatsOptions(CommonConstants.CONNECTION_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
               }
         ])
     ],
diff --git a/apps/api-gateway/src/credential-definition/credential-definition.module.ts b/apps/api-gateway/src/credential-definition/credential-definition.module.ts
index f7c2ac8a3..769b72109 100644
--- a/apps/api-gateway/src/credential-definition/credential-definition.module.ts
+++ b/apps/api-gateway/src/credential-definition/credential-definition.module.ts
@@ -4,6 +4,7 @@ import { Logger, Module } from '@nestjs/common';
 import { CredentialDefinitionController } from './credential-definition.controller';
 import { CredentialDefinitionService } from './credential-definition.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports:[
@@ -11,7 +12,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.CREDENTIAL_DEFINITION_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       }
     ])
   ],
diff --git a/apps/api-gateway/src/ecosystem/ecosystem.module.ts b/apps/api-gateway/src/ecosystem/ecosystem.module.ts
index 91146eb15..1a25f8ea0 100644
--- a/apps/api-gateway/src/ecosystem/ecosystem.module.ts
+++ b/apps/api-gateway/src/ecosystem/ecosystem.module.ts
@@ -7,6 +7,7 @@ import { Module } from '@nestjs/common';
 import { EcosystemController } from './ecosystem.controller';
 import { EcosystemService } from './ecosystem.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -16,7 +17,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.ECOSYSTEM_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       },
       CommonModule
     ])
diff --git a/apps/api-gateway/src/fido/fido.module.ts b/apps/api-gateway/src/fido/fido.module.ts
index e6bd502f9..7805e7cbb 100644
--- a/apps/api-gateway/src/fido/fido.module.ts
+++ b/apps/api-gateway/src/fido/fido.module.ts
@@ -3,6 +3,7 @@ import { ClientsModule, Transport } from '@nestjs/microservices';
 import { FidoController } from './fido.controller';
 import { FidoService } from './fido.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports:[
@@ -10,7 +11,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.FIDO_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       }
     ])
diff --git a/apps/api-gateway/src/issuance/issuance.module.ts b/apps/api-gateway/src/issuance/issuance.module.ts
index 55a38a91f..141c3ef84 100644
--- a/apps/api-gateway/src/issuance/issuance.module.ts
+++ b/apps/api-gateway/src/issuance/issuance.module.ts
@@ -6,6 +6,7 @@ import { CommonService } from '@credebl/common';
 import { HttpModule } from '@nestjs/axios';
 import { ImageServiceService } from '@credebl/image-service';
 import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -14,7 +15,7 @@ import { AwsService } from '@credebl/aws';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.ISSUANCE_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       }
     ])
   ],
diff --git a/apps/api-gateway/src/main.ts b/apps/api-gateway/src/main.ts
index 4ffdb106a..2a591d49f 100644
--- a/apps/api-gateway/src/main.ts
+++ b/apps/api-gateway/src/main.ts
@@ -12,6 +12,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
 
 import helmet from 'helmet';
 import { NodeEnvironment } from '@credebl/enum/enum';
+import { CommonConstants } from '@credebl/common/common.constant';
 dotenv.config();
 
 async function bootstrap(): Promise<void> {
@@ -24,7 +25,7 @@ async function bootstrap(): Promise<void> {
 
   app.connectMicroservice<MicroserviceOptions>({
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.API_GATEWAY_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
   });
 
   app.use(express.json({ limit: '50mb' }));
diff --git a/apps/api-gateway/src/notification/notification.module.ts b/apps/api-gateway/src/notification/notification.module.ts
index bc3bc7706..d368a572b 100644
--- a/apps/api-gateway/src/notification/notification.module.ts
+++ b/apps/api-gateway/src/notification/notification.module.ts
@@ -7,6 +7,7 @@ import { Module } from '@nestjs/common';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { NotificationController } from './notification.controller';
 import { NotificationService } from './notification.service';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -16,7 +17,7 @@ import { NotificationService } from './notification.service';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.NOTIFICATION_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       },
       CommonModule
diff --git a/apps/api-gateway/src/organization/organization.module.ts b/apps/api-gateway/src/organization/organization.module.ts
index b257653fd..bcf2f6c53 100644
--- a/apps/api-gateway/src/organization/organization.module.ts
+++ b/apps/api-gateway/src/organization/organization.module.ts
@@ -9,6 +9,7 @@ import { OrganizationService } from './organization.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { ImageServiceService } from '@credebl/image-service';
 import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 @Module({
   imports: [
     HttpModule,
@@ -17,7 +18,7 @@ import { AwsService } from '@credebl/aws';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.ORGANIZATION_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       },
       CommonModule
diff --git a/apps/api-gateway/src/platform/platform.module.ts b/apps/api-gateway/src/platform/platform.module.ts
index 817f7db0a..f5b3119c1 100644
--- a/apps/api-gateway/src/platform/platform.module.ts
+++ b/apps/api-gateway/src/platform/platform.module.ts
@@ -4,6 +4,7 @@ import { PlatformService } from './platform.service';
 import { ClientsModule, Transport } from '@nestjs/microservices';
 import { ConfigModule } from '@nestjs/config';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -12,7 +13,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.PLATFORM_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       }
     ])
   ],
diff --git a/apps/api-gateway/src/schema/schema.module.ts b/apps/api-gateway/src/schema/schema.module.ts
index b584a1c26..268e35021 100644
--- a/apps/api-gateway/src/schema/schema.module.ts
+++ b/apps/api-gateway/src/schema/schema.module.ts
@@ -5,6 +5,7 @@ import { Module } from '@nestjs/common';
 import { SchemaController } from './schema.controller';
 import { SchemaService } from './schema.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -13,7 +14,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.SCHEMA_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       }
     ])
diff --git a/apps/api-gateway/src/user/user.module.ts b/apps/api-gateway/src/user/user.module.ts
index df415ade5..0252d7000 100644
--- a/apps/api-gateway/src/user/user.module.ts
+++ b/apps/api-gateway/src/user/user.module.ts
@@ -6,6 +6,7 @@ import { Module } from '@nestjs/common';
 import { UserController } from './user.controller';
 import { UserService } from './user.service';
 import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -15,7 +16,7 @@ import { AwsService } from '@credebl/aws';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.USER_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       }
     ])
diff --git a/apps/api-gateway/src/utilities/utilities.module.ts b/apps/api-gateway/src/utilities/utilities.module.ts
index 9aa55503c..7dda4be54 100644
--- a/apps/api-gateway/src/utilities/utilities.module.ts
+++ b/apps/api-gateway/src/utilities/utilities.module.ts
@@ -8,6 +8,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
 import { ImageServiceService } from '@credebl/image-service';
 import { UtilitiesController } from './utilities.controller';
 import { UtilitiesService } from './utilities.service';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -17,7 +18,7 @@ import { UtilitiesService } from './utilities.service';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.UTILITY_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
 
       },
       CommonModule
diff --git a/apps/api-gateway/src/verification/verification.module.ts b/apps/api-gateway/src/verification/verification.module.ts
index d3a1e8192..d2769ff6f 100644
--- a/apps/api-gateway/src/verification/verification.module.ts
+++ b/apps/api-gateway/src/verification/verification.module.ts
@@ -5,6 +5,8 @@ import { Module } from '@nestjs/common';
 import { VerificationController } from './verification.controller';
 import { VerificationService } from './verification.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { ImageServiceService } from '@credebl/image-service';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -13,7 +15,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.VERIFICATION_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       }
     ])
   ],
diff --git a/apps/api-gateway/src/webhook/webhook.module.ts b/apps/api-gateway/src/webhook/webhook.module.ts
index b0140ce6a..db38e1f7e 100644
--- a/apps/api-gateway/src/webhook/webhook.module.ts
+++ b/apps/api-gateway/src/webhook/webhook.module.ts
@@ -6,6 +6,7 @@ import { CommonService } from '@credebl/common';
 import { HttpModule } from '@nestjs/axios';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -14,7 +15,7 @@ import { AwsService } from '@credebl/aws';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.API_GATEWAY_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.WEBHOOK_SERVICE, process.env.API_GATEWAY_NKEY_SEED)
       }
     ])
   ],
diff --git a/apps/connection/src/connection.module.ts b/apps/connection/src/connection.module.ts
index 4fa3b7abe..bd711711c 100644
--- a/apps/connection/src/connection.module.ts
+++ b/apps/connection/src/connection.module.ts
@@ -9,6 +9,7 @@ import { PrismaService } from '@credebl/prisma-service';
 import { CacheModule } from '@nestjs/cache-manager';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { UserActivityRepository } from 'libs/user-activity/repositories';
+import { CommonConstants } from '@credebl/common/common.constant';
 // import { nkeyAuthenticator } from 'nats';
 
 @Module({
@@ -17,7 +18,7 @@ import { UserActivityRepository } from 'libs/user-activity/repositories';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.CONNECTION_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.CONNECTION_SERVICE, process.env.CONNECTION_NKEY_SEED)
       }
     ]),
 
diff --git a/apps/connection/src/main.ts b/apps/connection/src/main.ts
index b92f88d1e..22c572fd3 100644
--- a/apps/connection/src/main.ts
+++ b/apps/connection/src/main.ts
@@ -4,6 +4,7 @@ import { HttpExceptionFilter } from 'libs/http-exception.filter';
 import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(ConnectionModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.CONNECTION_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.CONNECTION_SERVICE, process.env.CONNECTION_NKEY_SEED)
   });
 
   app.useGlobalFilters(new HttpExceptionFilter());
diff --git a/apps/ecosystem/src/ecosystem.module.ts b/apps/ecosystem/src/ecosystem.module.ts
index 91db49725..82cf3eb4d 100644
--- a/apps/ecosystem/src/ecosystem.module.ts
+++ b/apps/ecosystem/src/ecosystem.module.ts
@@ -8,6 +8,7 @@ import { PrismaService } from '@credebl/prisma-service';
 import { CacheModule } from '@nestjs/cache-manager';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { UserActivityRepository } from 'libs/user-activity/repositories';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -15,7 +16,7 @@ import { UserActivityRepository } from 'libs/user-activity/repositories';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.ECOSYSTEM_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.ECOSYSTEM_SERVICE, process.env.ECOSYSTEM_NKEY_SEED)
       }
     ]),
 
diff --git a/apps/ecosystem/src/main.ts b/apps/ecosystem/src/main.ts
index 47a5e9775..1ca9c8acf 100644
--- a/apps/ecosystem/src/main.ts
+++ b/apps/ecosystem/src/main.ts
@@ -4,6 +4,7 @@ import { HttpExceptionFilter } from 'libs/http-exception.filter';
 import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(EcosystemModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.ECOSYSTEM_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.ECOSYSTEM_SERVICE, process.env.ECOSYSTEM_NKEY_SEED)
   });
 
   app.useGlobalFilters(new HttpExceptionFilter());
diff --git a/apps/issuance/src/issuance.module.ts b/apps/issuance/src/issuance.module.ts
index 6580fc57e..a2bf5d964 100644
--- a/apps/issuance/src/issuance.module.ts
+++ b/apps/issuance/src/issuance.module.ts
@@ -14,6 +14,7 @@ import * as redisStore from 'cache-manager-redis-store';
 import { BulkIssuanceProcessor } from './issuance.processor';
 import { AwsService } from '@credebl/aws';
 import { UserActivityRepository } from 'libs/user-activity/repositories';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -22,7 +23,7 @@ import { UserActivityRepository } from 'libs/user-activity/repositories';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.ISSUANCE_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.ISSUANCE_SERVICE, process.env.ISSUANCE_NKEY_SEED)
       }
     ]),
     CommonModule,
diff --git a/apps/issuance/src/main.ts b/apps/issuance/src/main.ts
index d48f23f02..cacad1b16 100644
--- a/apps/issuance/src/main.ts
+++ b/apps/issuance/src/main.ts
@@ -4,6 +4,7 @@ import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { IssuanceModule } from '../src/issuance.module';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(IssuanceModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.ISSUANCE_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.ISSUANCE_SERVICE, process.env.ISSUANCE_NKEY_SEED)
 
   });
 
diff --git a/apps/ledger/src/credential-definition/credential-definition.module.ts b/apps/ledger/src/credential-definition/credential-definition.module.ts
index 25e9059d5..6cee51e36 100644
--- a/apps/ledger/src/credential-definition/credential-definition.module.ts
+++ b/apps/ledger/src/credential-definition/credential-definition.module.ts
@@ -8,13 +8,14 @@ import { CredentialDefinitionService } from './credential-definition.service';
 import { HttpModule } from '@nestjs/axios';
 import { PrismaService } from '@credebl/prisma-service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 @Module({
   imports: [
     ClientsModule.register([
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.CREDENTAILDEFINITION_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.CREDENTIAL_DEFINITION_SERVICE, process.env.CREDENTAILDEFINITION_NKEY_SEED)
       }
     ]),
     HttpModule,
diff --git a/apps/ledger/src/ledger.module.ts b/apps/ledger/src/ledger.module.ts
index 14e7abb9f..770f578ea 100644
--- a/apps/ledger/src/ledger.module.ts
+++ b/apps/ledger/src/ledger.module.ts
@@ -7,6 +7,7 @@ import { CredentialDefinitionModule } from './credential-definition/credential-d
 import { ClientsModule, Transport } from '@nestjs/microservices';
 import { LedgerRepository } from './repositories/ledger.repository';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -14,7 +15,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.LEDGER_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.LEDGER_SERVICE, process.env.LEDGER_NKEY_SEED)
 
       }
     ]),
diff --git a/apps/ledger/src/main.ts b/apps/ledger/src/main.ts
index 00d5623f1..178ab7b6a 100644
--- a/apps/ledger/src/main.ts
+++ b/apps/ledger/src/main.ts
@@ -4,17 +4,18 @@ import { HttpExceptionFilter } from 'libs/http-exception.filter';
 import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 
 async function bootstrap(): Promise<void> {
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(LedgerModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.LEDGER_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.LEDGER_SERVICE, process.env.LEDGER_NKEY_SEED)
 
   });
   app.useGlobalFilters(new HttpExceptionFilter());
 
   await app.listen();
-  Logger.log('Ladger-Service Microservice is listening to NATS ');
+  Logger.log('Ledger-Service Microservice is listening to NATS ');
 }
 bootstrap();
diff --git a/apps/ledger/src/schema/schema.module.ts b/apps/ledger/src/schema/schema.module.ts
index b0e39f13f..b13596826 100644
--- a/apps/ledger/src/schema/schema.module.ts
+++ b/apps/ledger/src/schema/schema.module.ts
@@ -8,13 +8,14 @@ import { SchemaService } from './schema.service';
 import { HttpModule } from '@nestjs/axios';
 import { PrismaService } from '@credebl/prisma-service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 @Module({
   imports: [
     ClientsModule.register([
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.SCHEMA_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.SCHEMA_SERVICE, process.env.SCHEMA_NKEY_SEED)
       }
     ]),
 
diff --git a/apps/notification/src/main.ts b/apps/notification/src/main.ts
index 0b4b87bf8..cc1d43d0b 100644
--- a/apps/notification/src/main.ts
+++ b/apps/notification/src/main.ts
@@ -4,6 +4,7 @@ import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { NotificationModule } from '../src/notification.module';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(NotificationModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.NOTIFICATION_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.NOTIFICATION_SERVICE, process.env.NOTIFICATION_NKEY_SEED)
 
   });
 
diff --git a/apps/notification/src/notification.module.ts b/apps/notification/src/notification.module.ts
index 658d3a736..66a6f151d 100644
--- a/apps/notification/src/notification.module.ts
+++ b/apps/notification/src/notification.module.ts
@@ -8,6 +8,7 @@ import { NotificationController } from './notification.controller';
 import { NotificationService } from './notification.service';
 import { PrismaService } from '@credebl/prisma-service';
 import { NotificationRepository } from './notification.repository';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -16,7 +17,7 @@ import { NotificationRepository } from './notification.repository';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.NOTIFICATION_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.NOTIFICATION_SERVICE, process.env.NOTIFICATION_NKEY_SEED)
       }
     ]),
     CommonModule,
diff --git a/apps/organization/src/main.ts b/apps/organization/src/main.ts
index c23f7e9f1..1ee87db06 100644
--- a/apps/organization/src/main.ts
+++ b/apps/organization/src/main.ts
@@ -5,6 +5,7 @@ import { OrganizationModule } from './organization.module';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 // import { nkeyAuthenticator } from 'nats';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -12,7 +13,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(OrganizationModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.ORGANIZATION_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.ORGANIZATION_SERVICE, process.env.ORGANIZATION_NKEY_SEED)
 
   });
   app.useGlobalFilters(new HttpExceptionFilter());
diff --git a/apps/organization/src/organization.module.ts b/apps/organization/src/organization.module.ts
index 1393b5990..588afbcfc 100644
--- a/apps/organization/src/organization.module.ts
+++ b/apps/organization/src/organization.module.ts
@@ -17,13 +17,15 @@ import { getNatsOptions } from '@credebl/common/nats.config';
 import { ClientRegistrationService } from '@credebl/client-registration';
 import { KeycloakUrlService } from '@credebl/keycloak-url';
 
+import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 @Module({
   imports: [
     ClientsModule.register([
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.ORGANIZATION_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.ORGANIZATION_SERVICE, process.env.ORGANIZATION_NKEY_SEED)
       }
     ]),
     CommonModule,
diff --git a/apps/user/src/main.ts b/apps/user/src/main.ts
index 4acd6ddeb..8c3df1edc 100644
--- a/apps/user/src/main.ts
+++ b/apps/user/src/main.ts
@@ -4,13 +4,14 @@ import { NestFactory } from '@nestjs/core';
 import { UserModule } from './user.module';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
 async function bootstrap(): Promise<void> {
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(UserModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.USER_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.USER_SERVICE, process.env.USER_NKEY_SEED)
   });
 
   app.useGlobalFilters(new HttpExceptionFilter());
diff --git a/apps/user/src/user.module.ts b/apps/user/src/user.module.ts
index 6f7ded78f..3ca10fc1e 100644
--- a/apps/user/src/user.module.ts
+++ b/apps/user/src/user.module.ts
@@ -18,6 +18,7 @@ import { UserRepository } from '../repositories/user.repository';
 import { UserService } from './user.service';
 import { UserDevicesRepository } from '../repositories/user-device.repository';
 import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -25,7 +26,7 @@ import { AwsService } from '@credebl/aws';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.USER_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.USER_SERVICE, process.env.USER_NKEY_SEED)
       }
     ]),
     
diff --git a/apps/utility/src/main.ts b/apps/utility/src/main.ts
index 4de5fd578..ee165502d 100644
--- a/apps/utility/src/main.ts
+++ b/apps/utility/src/main.ts
@@ -4,6 +4,7 @@ import { NestFactory } from '@nestjs/core';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { getNatsOptions } from '@credebl/common/nats.config';
 import { UtilitiesModule } from './utilities.module';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(UtilitiesModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.UTILITIES_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.UTILITY_SERVICE, process.env.UTILITIES_NKEY_SEED)
 
   });
   app.useGlobalFilters(new HttpExceptionFilter());
diff --git a/apps/utility/src/utilities.module.ts b/apps/utility/src/utilities.module.ts
index 5048add05..51c31d6dd 100644
--- a/apps/utility/src/utilities.module.ts
+++ b/apps/utility/src/utilities.module.ts
@@ -8,6 +8,7 @@ import { UtilitiesController } from './utilities.controller';
 import { UtilitiesService } from './utilities.service';
 import { UtilitiesRepository } from './utilities.repository';
 import { AwsService } from '@credebl/aws';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -15,7 +16,7 @@ import { AwsService } from '@credebl/aws';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.UTILITIES_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.UTILITY_SERVICE, process.env.UTILITIES_NKEY_SEED)
       }
     ]),
     CommonModule,
diff --git a/apps/verification/src/main.ts b/apps/verification/src/main.ts
index 7c0bcf689..b8ff0ea23 100644
--- a/apps/verification/src/main.ts
+++ b/apps/verification/src/main.ts
@@ -4,6 +4,7 @@ import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { VerificationModule } from './verification.module';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(VerificationModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.VERIFICATION_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.VERIFICATION_SERVICE, process.env.VERIFICATION_NKEY_SEED)
 
   });
 
diff --git a/apps/verification/src/verification.module.ts b/apps/verification/src/verification.module.ts
index c2ebeea15..7444a03e6 100644
--- a/apps/verification/src/verification.module.ts
+++ b/apps/verification/src/verification.module.ts
@@ -6,13 +6,19 @@ import { CommonModule } from '@credebl/common';
 import { VerificationRepository } from './repositories/verification.repository';
 import { PrismaService } from '@credebl/prisma-service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { OutOfBandVerification } from '../templates/out-of-band-verification.template';
+import { EmailDto } from '@credebl/common/dtos/email.dto';
+import { CacheModule } from '@nestjs/cache-manager';
+import { UserActivityService } from '@credebl/user-activity';
+import { UserActivityRepository } from 'libs/user-activity/repositories';
+import { CommonConstants } from '@credebl/common/common.constant';
 @Module({
   imports: [
     ClientsModule.register([
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.VERIFICATION_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.VERIFICATION_SERVICE, process.env.VERIFICATION_NKEY_SEED)
 
       }
     ]),
diff --git a/apps/webhook/src/main.ts b/apps/webhook/src/main.ts
index d5a7010a9..2048425a5 100644
--- a/apps/webhook/src/main.ts
+++ b/apps/webhook/src/main.ts
@@ -4,6 +4,7 @@ import { Logger } from '@nestjs/common';
 import { MicroserviceOptions, Transport } from '@nestjs/microservices';
 import { WebhookModule } from '../src/webhook.module';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 const logger = new Logger();
 
@@ -11,7 +12,7 @@ async function bootstrap(): Promise<void> {
 
   const app = await NestFactory.createMicroservice<MicroserviceOptions>(WebhookModule, {
     transport: Transport.NATS,
-    options: getNatsOptions(process.env.ISSUANCE_NKEY_SEED)
+    options: getNatsOptions(CommonConstants.WEBHOOK_SERVICE, process.env.ISSUANCE_NKEY_SEED)
 
   });
 
diff --git a/apps/webhook/src/webhook.module.ts b/apps/webhook/src/webhook.module.ts
index b8bf50c54..229a7dd68 100644
--- a/apps/webhook/src/webhook.module.ts
+++ b/apps/webhook/src/webhook.module.ts
@@ -7,6 +7,7 @@ import { WebhookController } from './webhook.controller';
 import { WebhookRepository } from './webhook.repository';
 import { WebhookService } from './webhook.service';
 import { getNatsOptions } from '@credebl/common/nats.config';
+import { CommonConstants } from '@credebl/common/common.constant';
 
 @Module({
   imports: [
@@ -15,7 +16,7 @@ import { getNatsOptions } from '@credebl/common/nats.config';
       {
         name: 'NATS_CLIENT',
         transport: Transport.NATS,
-        options: getNatsOptions(process.env.ISSUANCE_NKEY_SEED)
+        options: getNatsOptions(CommonConstants.WEBHOOK_SERVICE, process.env.ISSUANCE_NKEY_SEED)
       }
     ]),
     CommonModule
diff --git a/libs/common/src/common.constant.ts b/libs/common/src/common.constant.ts
index 12180ed9e..37a898c08 100644
--- a/libs/common/src/common.constant.ts
+++ b/libs/common/src/common.constant.ts
@@ -318,7 +318,27 @@ export enum CommonConstants {
  //CacheInfo
 CACHE_SHARED_APIKEY_KEY = "dedicatedApiKey",
 CACHE_APIKEY_KEY = "sharedApiKey",
-CACHE_TTL_SECONDS = 604800
+CACHE_TTL_SECONDS = 604800,
+
+// MICROSERVICES NAMES
+API_GATEWAY_SERVICE = 'api-gateway',
+ORGANIZATION_SERVICE = 'organization',
+USER_SERVICE = 'user',
+AUTH_SERVICE = 'authz',
+FIDO_SERVICE = 'fido',
+UTILITY_SERVICE = 'utilitites',
+CONNECTION_SERVICE = 'connection',
+LEDGER_SERVICE = 'ledger',
+PLATFORM_SERVICE = 'platform',
+SCHEMA_SERVICE = 'schema',
+CREDENTIAL_DEFINITION_SERVICE = 'credential-definition',
+AGENT_SERVICE = 'agent-service',
+AGENT_PROVISIONING = 'agent-provisioning',
+ISSUANCE_SERVICE = 'issuance',
+VERIFICATION_SERVICE = 'verification',
+ECOSYSTEM_SERVICE = 'ecosystem',
+WEBHOOK_SERVICE = 'webhook',
+NOTIFICATION_SERVICE = 'notification'
 }
 
 export const postgresqlErrorCodes = [];
diff --git a/libs/common/src/nats.config.ts b/libs/common/src/nats.config.ts
index 3af2b867f..331256866 100644
--- a/libs/common/src/nats.config.ts
+++ b/libs/common/src/nats.config.ts
@@ -1,13 +1,28 @@
+import { NATSReconnects } from '@credebl/enum/enum';
 import { Authenticator, nkeyAuthenticator } from 'nats';
 
 export const getNatsOptions = (
-  nkeySeed?: string
+  serviceName: string, nkeySeed?: string
 ): {
   servers: string[];
   authenticator?: Authenticator;
-} => nkeySeed
-? {
-        servers: [`${process.env.NATS_URL}`],
-        authenticator: nkeyAuthenticator(new TextEncoder().encode(nkeySeed))
-      }
-    : { servers: [`${process.env.NATS_URL}`] };
+  maxReconnectAttempts: NATSReconnects;
+  reconnectTimeWait: NATSReconnects;
+  queue?: string;
+} => {
+  const baseOptions = {
+    servers: `${process.env.NATS_URL}`.split(','),
+    maxReconnectAttempts: NATSReconnects.maxReconnectAttempts,
+    reconnectTimeWait: NATSReconnects.reconnectTimeWait,
+    queue: serviceName
+  };
+
+  if (nkeySeed) {
+    return {
+      ...baseOptions,
+      authenticator: nkeyAuthenticator(new TextEncoder().encode(nkeySeed))
+    };
+  } 
+  return baseOptions;
+};
+
diff --git a/libs/enum/src/enum.ts b/libs/enum/src/enum.ts
index ebe31b1a0..7e1be09a8 100644
--- a/libs/enum/src/enum.ts
+++ b/libs/enum/src/enum.ts
@@ -1,3 +1,8 @@
+export enum NATSReconnects {
+    maxReconnectAttempts = (10 * 60) / 5, // 10 minutes with a reconnection attempt every 5 seconds
+    reconnectTimeWait = 5000 // 5 second delay between reconnection attempts
+}
+
 export enum SortValue {
     ASC = 'asc',
     DESC = 'desc'