diff --git a/CHANGELOG.md b/CHANGELOG.md
index cea5cd0ad..1ea7f2a80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## 7.4.0
+
+### Fixes
+
+- [#1421](https://github.com/okta/okta-auth-js/pull/1421) Throw error if there is incorrect `relatesTo` in IDX response
+
+### Other
+
+- [#1409](https://github.com/okta/okta-auth-js/pull/1409) Adds password page to React myaccount sample app
+
 ## 7.3.0
 
 ### Features
@@ -35,7 +45,7 @@
 
 - [#1343](https://github.com/okta/okta-auth-js/pull/1343) Supports Step Up MFA against `/authorize` and `/interact` endpoints
 
-# Other
+### Other
 
 - [#1342](https://github.com/okta/okta-auth-js/pull/1342) - fixes possible RCE in jsonpath-plus
 
diff --git a/lib/idx/authenticator/util.ts b/lib/idx/authenticator/util.ts
index 61181bc04..58248cfa6 100644
--- a/lib/idx/authenticator/util.ts
+++ b/lib/idx/authenticator/util.ts
@@ -35,7 +35,7 @@ export function findMatchedOption(authenticators, options) {
   let option;
   for (let authenticator of authenticators) {
     option = options
-      .find(({ relatesTo }) => relatesTo.key === authenticator.key);
+      .find(({ relatesTo }) => relatesTo.key && relatesTo.key === authenticator.key);
     if (option) {
       break;
     }
diff --git a/lib/idx/idxState/v1/idxResponseParser.ts b/lib/idx/idxState/v1/idxResponseParser.ts
index 015ddb8df..c5db593ab 100644
--- a/lib/idx/idxState/v1/idxResponseParser.ts
+++ b/lib/idx/idxState/v1/idxResponseParser.ts
@@ -17,6 +17,7 @@ import { OktaAuthIdxInterface } from '../../types';    // auth-js/types
 import { generateRemediationFunctions } from './remediationParser';
 import generateIdxAction from './generateIdxAction';
 import { jsonpath } from '../../../util/jsonpath';
+import { AuthSdkError } from '../../../errors';
 
 const SKIP_FIELDS = Object.fromEntries([
   'remediation', // remediations are put into proceed/neededToProceed
@@ -79,6 +80,8 @@ const expandRelatesTo = (idxResponse, value) => {
         if (result) {
           value[k] = result;
           return;
+        } else {
+          throw new AuthSdkError(`Cannot resolve relatesTo: ${query}`);
         }
       }
     }
diff --git a/lib/idx/remediators/Base/SelectAuthenticator.ts b/lib/idx/remediators/Base/SelectAuthenticator.ts
index 88a582a45..10e710917 100644
--- a/lib/idx/remediators/Base/SelectAuthenticator.ts
+++ b/lib/idx/remediators/Base/SelectAuthenticator.ts
@@ -33,7 +33,7 @@ export class SelectAuthenticator<T extends SelectAuthenticatorValues = SelectAut
     let option;
     for (let authenticator of authenticators) {
       option = options
-        .find(({ relatesTo }) => relatesTo.key === authenticator.key);
+        .find(({ relatesTo }) => relatesTo.key && relatesTo.key === authenticator.key);
       if (option) {
         break;
       }
diff --git a/test/spec/idx/authenticator/util.ts b/test/spec/idx/authenticator/util.ts
index 7d53a5457..071a1b9a7 100644
--- a/test/spec/idx/authenticator/util.ts
+++ b/test/spec/idx/authenticator/util.ts
@@ -70,5 +70,17 @@ describe('authenticator/util', () => {
       const res = findMatchedOption([authenticator], [option]);
       expect(res).toBe(undefined);
     });
+    it('will not match if key is missing', () => {
+      const authenticator = {
+        id: 'a'
+      };
+      const option = {
+        relatesTo: {
+          id: 'a'
+        }
+      };
+      const res = findMatchedOption([authenticator], [option]);
+      expect(res).toBe(undefined);
+    });
   });
 });
\ No newline at end of file
diff --git a/test/spec/idx/idxState/unit/v1/idxResponseParser.test.js b/test/spec/idx/idxState/unit/v1/idxResponseParser.test.js
index 1bb61c2c3..ebca3de59 100644
--- a/test/spec/idx/idxState/unit/v1/idxResponseParser.test.js
+++ b/test/spec/idx/idxState/unit/v1/idxResponseParser.test.js
@@ -21,6 +21,11 @@ const mockComplexContextIdxResponse = require('../../mocks/poll-for-password');
 const mockTerminalIdxResponse = require('../../mocks/terminal-return-email');
 const mockMessageIdxResponse = require('../../mocks/unknown-user');
 const mockSuccessIdxResponse = require('../../mocks/success');
+const mockIdxResponseWithBadRelationship = () => {
+  const mock = require('../../mocks/authenticator-verification-password');
+  mock.remediation.value[1].value[0].options[0].relatesTo = '$.authenticatorEnrollments.value[999]';
+  return mock;
+};
 
 jest.mock('../../../../../../lib/idx/idxState/v1/generateIdxAction');
 jest.mock('../../../../../../lib/idx/idxState/v1/remediationParser');
@@ -164,5 +169,9 @@ describe('idxResponseParser', () => {
       expect( remediations[0]).toMatchSnapshot();
     });
 
+    it('throws error if relatesTo can\'t be resolved', () => {
+      const fn = () => parseIdxResponse( {}, mockIdxResponseWithBadRelationship() );
+      expect(fn).toThrowError('Cannot resolve relatesTo: $.authenticatorEnrollments.value[999]');
+    });
   });
 });
diff --git a/test/spec/idx/remediators/SelectAuthenticator.ts b/test/spec/idx/remediators/SelectAuthenticator.ts
new file mode 100644
index 000000000..c183fb18b
--- /dev/null
+++ b/test/spec/idx/remediators/SelectAuthenticator.ts
@@ -0,0 +1,32 @@
+import { SelectAuthenticatorAuthenticate } from '../../../../lib/idx/remediators';
+import {
+  SelectAuthenticatorAuthenticateRemediationFactory,
+  AuthenticatorValueFactory,
+  PhoneAuthenticatorOptionFactory,
+} from '@okta/test.support/idx';
+
+describe('remediators/Base/SelectAuthenticator', () => {
+  describe('canRemediate', () => {
+    it('retuns false if can\'t find matched authenticator by key', () => {
+      const remediation = SelectAuthenticatorAuthenticateRemediationFactory.build({
+        value: [
+          AuthenticatorValueFactory.build({
+            options: [
+              PhoneAuthenticatorOptionFactory.params({
+                // prevent resolving of authenticator by `relatesTo` in purpose
+                // eslint-disable-next-line @typescript-eslint/no-explicit-any
+                _authenticator: 'cant_be_resolved' as any
+              }).build(),
+            ]
+          })
+        ]
+      });
+
+      const authenticators = [
+        { id: 'foo' }
+      ];
+      const r = new SelectAuthenticatorAuthenticate(remediation, { authenticators });
+      expect(r.canRemediate()).toBe(false);
+    });
+  });
+});