diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4bc0fb25c..57c9c48532 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Updated license header to "Copyright (c) 2021,2024 Contributors to the Eclipse Foundation"
+- Changed lookupGlobalAssetIds to lookupShellsByBPN, which provides full object.
 
 ## [4.4.0] - 2024-01-15
 ### Added
diff --git a/irs-registry-client/src/main/java/org/eclipse/tractusx/irs/registryclient/DigitalTwinRegistryService.java b/irs-registry-client/src/main/java/org/eclipse/tractusx/irs/registryclient/DigitalTwinRegistryService.java
index 47f969ec02..1afd1d3bb2 100644
--- a/irs-registry-client/src/main/java/org/eclipse/tractusx/irs/registryclient/DigitalTwinRegistryService.java
+++ b/irs-registry-client/src/main/java/org/eclipse/tractusx/irs/registryclient/DigitalTwinRegistryService.java
@@ -34,15 +34,13 @@
 public interface DigitalTwinRegistryService {
 
     /**
-     * Retrieves the global asset IDs of all asset administration shells for a given BPN.
+     * Retrieves the shell details of all asset administration shells for a given BPN.
      *
      * @param bpn the BPN to retrieve the shells for
-     * @return the collection of global asset IDs
+     * @return the collection of asset administration shells
      */
-    default Collection<String> lookupGlobalAssetIds(final String bpn) throws RegistryServiceException {
-        return fetchShells(lookupShellIdentifiers(bpn)).stream()
-                                                       .map(AssetAdministrationShellDescriptor::getGlobalAssetId)
-                                                       .toList();
+    default Collection<AssetAdministrationShellDescriptor> lookupShellsByBPN(final String bpn) throws RegistryServiceException {
+        return fetchShells(lookupShellIdentifiers(bpn)).stream().toList();
     }
 
     /**
diff --git a/irs-registry-client/src/test/java/org/eclipse/tractusx/irs/registryclient/decentral/DecentralDigitalTwinRegistryServiceTest.java b/irs-registry-client/src/test/java/org/eclipse/tractusx/irs/registryclient/decentral/DecentralDigitalTwinRegistryServiceTest.java
index d8afd5a72f..5df9a62db4 100644
--- a/irs-registry-client/src/test/java/org/eclipse/tractusx/irs/registryclient/decentral/DecentralDigitalTwinRegistryServiceTest.java
+++ b/irs-registry-client/src/test/java/org/eclipse/tractusx/irs/registryclient/decentral/DecentralDigitalTwinRegistryServiceTest.java
@@ -203,11 +203,12 @@ void shouldReturnExpectedGlobalAssetId() throws RegistryServiceException {
                 expectedShell);
 
         // when
-        final Collection<String> globalAssetIds = decentralDigitalTwinRegistryService.lookupGlobalAssetIds(
+        final Collection<AssetAdministrationShellDescriptor> assetAdministrationShellDescriptors = decentralDigitalTwinRegistryService.lookupShellsByBPN(
                 digitalTwinRegistryKey.bpn());
 
+        String actualGlobalAssetId = assetAdministrationShellDescriptors.stream().findFirst().map(AssetAdministrationShellDescriptor::getGlobalAssetId).get();
         // then
-        Assertions.assertThat(globalAssetIds).containsExactly(expectedGlobalAssetId);
+        Assertions.assertThat(actualGlobalAssetId).isEqualTo(expectedGlobalAssetId);
     }
 
 }