diff --git a/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag022.java b/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag022.java
index 34e82e769..47a85ce0d 100644
--- a/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag022.java
+++ b/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag022.java
@@ -59,11 +59,11 @@ private void initialize() {
 
     setSubfieldsWithCardinality(
       "a", "International Standard Serial Number", "NR",
-      "l", "ISSN-L", "NR",
-      "m", "Canceled ISSN-L", "R",
+      // "l", "ISSN-L", "NR",
+      // "m", "Canceled ISSN-L", "R",
       "y", "Incorrect ISSN", "R",
       "z", "Canceled ISSN", "R",
-      "0", "Authority record control number or standard number", "R",
+      "0", "Authority record control number or standard number", "NR",
       "1", "Real World Object URI", "R",
       "2", "Source", "NR",
       "6", "Linkage", "NR",
@@ -82,6 +82,7 @@ private void initialize() {
       .setFrbrFunctions(DiscoverySearch, DiscoveryIdentify, DiscoveryObtain)
       .setCompilanceLevels("A", "A");
 
+    /* Obsolete
     getSubfield("l")
       .setBibframeTag("issnL")
       .setCompilanceLevels("A", "A");
@@ -89,6 +90,7 @@ private void initialize() {
     getSubfield("m")
       .setMqTag("canceledIssnL")
       .setCompilanceLevels("A", "A");
+     */
 
     getSubfield("y")
       .setMqTag("incorrect")
@@ -124,7 +126,9 @@ private void initialize() {
 
     setHistoricalSubfields(
       "b", "Form of issue [OBSOLETE] [CAN/MARC only]",
-      "c", "Price [OBSOLETE] [CAN/MARC only]"
+      "c", "Price [OBSOLETE] [CAN/MARC only]",
+      "l", "ISSN-L [OBSOLETE, 2023]. Subfield $l was made obsolete in favor of recording ISSN-L in field 023.",
+      "m", "Canceled ISSN-L [OBSOLETE, 2023] Subfield $m was made obsolete in favor of recording canceled ISSN-L in field 023."
     );
 
     putVersionSpecificSubfields(MarcVersion.KBR, Arrays.asList(
diff --git a/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag023.java b/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag023.java
new file mode 100644
index 000000000..ae7a7993f
--- /dev/null
+++ b/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags01x/Tag023.java
@@ -0,0 +1,99 @@
+package de.gwdg.metadataqa.marc.definition.tags.tags01x;
+
+import de.gwdg.metadataqa.marc.definition.Cardinality;
+import de.gwdg.metadataqa.marc.definition.MarcVersion;
+import de.gwdg.metadataqa.marc.definition.general.parser.LinkageParser;
+import de.gwdg.metadataqa.marc.definition.general.parser.RecordControlNumberParser;
+import de.gwdg.metadataqa.marc.definition.general.validator.ISSNValidator;
+import de.gwdg.metadataqa.marc.definition.structure.DataFieldDefinition;
+import de.gwdg.metadataqa.marc.definition.structure.Indicator;
+import de.gwdg.metadataqa.marc.definition.structure.SubfieldDefinition;
+
+import java.util.Arrays;
+
+/**
+ * Cluster ISSN
+ * https://www.loc.gov/marc/bibliographic/bd023.html
+ */
+public class Tag023 extends DataFieldDefinition {
+
+  private static Tag023 uniqueInstance;
+
+  private Tag023() {
+    initialize();
+    postCreation();
+  }
+
+  public static Tag023 getInstance() {
+    if (uniqueInstance == null)
+      uniqueInstance = new Tag023();
+    return uniqueInstance;
+  }
+
+  private void initialize() {
+
+    tag = "023";
+    label = "Cluster ISSN";
+    mqTag = "ClusterIssn";
+    cardinality = Cardinality.Repeatable;
+    descriptionUrl = "https://www.loc.gov/marc/bibliographic/bd020.html";
+    setCompilanceLevels("A", "A");
+
+    ind1 = new Indicator("Type of Cluster ISSN")
+      .setCodes(
+        "0", "ISSN-L",
+        "1", "ISSN-H"
+      );
+    ind2 = new Indicator();
+
+    setSubfieldsWithCardinality(
+      "a", "Cluster ISSN", "NR",
+      "y", "Incorrect Cluster ISSN", "R",
+      "z", "Canceled Cluster ISSN", "R",
+      "0", "Authority record control number or standard number", "NR",
+      "1", "Real World Object URI", "R",
+      "2", "Source", "NR",
+      "6", "Linkage", "NR",
+      "8", "Field link and sequence number", "R"
+    );
+    // TODO validation ISO 2108
+
+    getSubfield("6").setContentParser(LinkageParser.getInstance());
+
+    getSubfield("a")
+      .setBibframeTag("rdf:value")
+      .setValidator(ISSNValidator.getInstance());
+
+    getSubfield("y")
+      .setBibframeTag("acquisitionTerms")
+      .setValidator(ISSNValidator.getInstance());
+
+    getSubfield("z")
+      .setBibframeTag("canceledClusterISSN")
+      .setValidator(ISSNValidator.getInstance());
+
+    getSubfield("0")
+      .setMqTag("authorityRecordControlNumber")
+      .setContentParser(RecordControlNumberParser.getInstance());
+
+    getSubfield("1")
+      .setMqTag("uri");
+
+    getSubfield("2")
+      .setMqTag("source");
+    // TODO
+    // Code from: ISSN Manual, Annex 3: List of ISSN Centre codes [PDF, 199 KB].
+
+    getSubfield("6")
+      .setBibframeTag("linkage");
+
+    getSubfield("8")
+      .setMqTag("fieldLink");
+
+    putVersionSpecificSubfields(MarcVersion.KBR, Arrays.asList(
+      new SubfieldDefinition("*", "Link with identifier", "NR").setMqTag("link"),
+      new SubfieldDefinition("@", "Language of field", "NR").setMqTag("language"),
+      new SubfieldDefinition("#", "number/occurrence of field", "NR").setMqTag("number")
+    ));
+  }
+}
diff --git a/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags5xx/Tag532.java b/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags5xx/Tag532.java
index b3d1fb3bc..e8c19a9c2 100644
--- a/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags5xx/Tag532.java
+++ b/src/main/java/de/gwdg/metadataqa/marc/definition/tags/tags5xx/Tag532.java
@@ -49,6 +49,7 @@ private void initialize() {
 
     setSubfieldsWithCardinality(
       "a", "Summary of accessibility", "NR",
+      "3", "Materials specified", "NR",
       "6", "Linkage", "NR",
       "8", "Field link and sequence number", "R"
     );
@@ -56,6 +57,9 @@ private void initialize() {
     getSubfield("a")
       .setMqTag("summary");
 
+    getSubfield("3")
+      .setMqTag("materialsSpecified");
+
     getSubfield("6")
       .setBibframeTag("linkage")
       .setContentParser(LinkageParser.getInstance());