diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72cd4413a4..2a6d85254c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,7 +11,7 @@ _**For better traceability add the corresponding GitHub issue number in each cha
 
 - EdcPolicyDefinitionService, EdcContractDefinitionService and EdcAssetService return existing resource if it exists in EDC
 - Added AssetAdministrationShellDescriptor specificAssetIds support for externalSubjectId required for data provisioning
-- Registering a job - aspects array is now accepting full urn of aspect model instead of name only, eg. 'urn:bamm:io.catenax.single_level_bom_as_built:2.0.0#SingleLevelBomAsBuilt' instead 'SingleLevelBomAsBuilt' - #439
+- Registering a job - aspects array is now accepting full urn of aspect model instead of name only, eg. 'urn:bamm:io.catenax.single_level_bom_as_built:2.0.0#SingleLevelBomAsBuilt' instead 'SingleLevelBomAsBuilt'. #439
 
 ## [4.7.0] - 2024-03-04
 ### Added
diff --git a/irs-api/src/main/java/org/eclipse/tractusx/irs/services/IrsItemGraphQueryService.java b/irs-api/src/main/java/org/eclipse/tractusx/irs/services/IrsItemGraphQueryService.java
index 197193c0c8..498d3f09eb 100644
--- a/irs-api/src/main/java/org/eclipse/tractusx/irs/services/IrsItemGraphQueryService.java
+++ b/irs-api/src/main/java/org/eclipse/tractusx/irs/services/IrsItemGraphQueryService.java
@@ -203,7 +203,7 @@ private void validateAspectTypeValues(final List<String> aspectTypeValues) {
             final List<String> invalidAspectTypes = aspectTypeValues.stream()
                                                                     .filter(s -> !availableUrns.contains(s)
                                                                             || !s.matches(
-                                                                            "^(urn:(b|s)amm:.*\\d\\.\\d\\.\\d)?(#)?(\\w+)?$"))
+                                                                            "^(urn:[bs]amm:.*\\d\\.\\d\\.\\d)?(#)?(\\w+)?$"))
                                                                     .toList();
             if (!invalidAspectTypes.isEmpty()) {
                 throw new IllegalArgumentException(
diff --git a/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterBatchOrder.java b/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterBatchOrder.java
index 371fa044f9..9a436a6b4f 100644
--- a/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterBatchOrder.java
+++ b/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterBatchOrder.java
@@ -80,7 +80,7 @@
 })
 public class RegisterBatchOrder {
 
-    private static final String ASPECT_MODEL_REGEX = "^(urn:(b|s)amm:.*\\d\\.\\d\\.\\d)?(#)?(\\w+)?$";
+    private static final String ASPECT_MODEL_REGEX = "^(urn:[bs]amm:.*\\d\\.\\d\\.\\d)?(#)?(\\w+)?$";
 
     @NotEmpty
     @Valid
diff --git a/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterJob.java b/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterJob.java
index 7f7d4130a3..edcb0a4eaa 100644
--- a/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterJob.java
+++ b/irs-models/src/main/java/org/eclipse/tractusx/irs/component/RegisterJob.java
@@ -54,7 +54,7 @@ public class RegisterJob {
     private static final String MAX_TREE_DEPTH_DESC = "100";
     private static final int MIN_TREE_DEPTH = 1;
     private static final int MAX_TREE_DEPTH = 100;
-    private static final String ASPECT_MODEL_REGEX = "^(urn:(b|s)amm:.*\\d\\.\\d\\.\\d)?(#)?(\\w+)?$";
+    private static final String ASPECT_MODEL_REGEX = "^(urn:[bs]amm:.*\\d\\.\\d\\.\\d)?(#)?(\\w+)?$";
 
     @NotNull
     @Valid
diff --git a/irs-models/src/main/java/org/eclipse/tractusx/irs/component/assetadministrationshell/SubmodelDescriptor.java b/irs-models/src/main/java/org/eclipse/tractusx/irs/component/assetadministrationshell/SubmodelDescriptor.java
index 5afe1061bf..0392407168 100644
--- a/irs-models/src/main/java/org/eclipse/tractusx/irs/component/assetadministrationshell/SubmodelDescriptor.java
+++ b/irs-models/src/main/java/org/eclipse/tractusx/irs/component/assetadministrationshell/SubmodelDescriptor.java
@@ -82,8 +82,8 @@ public String getAspectType() {
     /* package */ boolean isAspect(final String filterSemanticId) {
         return Optional.ofNullable(getAspectType())
                 .filter(aspect -> StringUtils.hasLength(filterSemanticId))
-                .map(semanticId -> semanticId.contains(lowerCaseNameWithUnderscores(filterSemanticId))
-                        || semanticModelNamesMatchAndVersionIsInRange(semanticId, filterSemanticId))
+                .map(aspect -> aspect.contains(lowerCaseNameWithUnderscores(filterSemanticId))
+                        || semanticModelNamesMatchAndVersionIsInRange(aspect, filterSemanticId))
                 .orElse(false);
     }