diff --git a/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/policy/service/EdcPolicyDefinitionService.java b/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/policy/service/EdcPolicyDefinitionService.java
index ad76aa4c15..db404d211d 100644
--- a/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/policy/service/EdcPolicyDefinitionService.java
+++ b/irs-edc-client/src/main/java/org/eclipse/tractusx/irs/edc/client/policy/service/EdcPolicyDefinitionService.java
@@ -29,6 +29,7 @@
 import org.eclipse.tractusx.irs.edc.client.EdcConfiguration;
 import org.eclipse.tractusx.irs.edc.client.asset.model.OdrlContext;
 import org.eclipse.tractusx.irs.edc.client.contract.model.EdcOperator;
+import org.eclipse.tractusx.irs.edc.client.policy.PolicyType;
 import org.eclipse.tractusx.irs.edc.client.policy.model.EdcCreatePolicyDefinitionRequest;
 import org.eclipse.tractusx.irs.edc.client.policy.model.EdcPolicy;
 import org.eclipse.tractusx.irs.edc.client.policy.model.EdcPolicyPermission;
@@ -59,7 +60,7 @@ public class EdcPolicyDefinitionService {
     private static final String ATOMIC_CONSTRAINT = "AtomicConstraint";
     private static final String CONSTRAINT = "Constraint";
     private static final String OPERATOR_PREFIX = "odrl:";
-    private static final String USE_ACTION = "use";
+    private static final String USE_ACTION = PolicyType.USE.getValue();
 
     private final EdcConfiguration config;
     private final RestTemplate restTemplate;
diff --git a/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/EdcSubmodelClientTest.java b/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/EdcSubmodelClientTest.java
index 33a61964db..f9625f6858 100644
--- a/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/EdcSubmodelClientTest.java
+++ b/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/EdcSubmodelClientTest.java
@@ -469,15 +469,18 @@ void shouldRetrieveEndpointReferenceForAsset2() throws Exception {
     }
 
     @Test
-    void shouldRetrieveEndpointReferenceForRegistryAssetForOldIdentifier() throws Exception {
+    void shouldRetrieveEndpointReferenceForRegistryAssetUsingFallbackOldIdentifier() throws Exception {
         // arrange
-        when(config.getControlplane().getProviderSuffix()).thenReturn(PROVIDER_SUFFIX);
-
-        final String agreementId = "agreementId";
+        // no catalog item for taxonomy#DigitalTwinRegistry is found,
+        // so the fallback data.core.digitalTwinRegistry is used
         when(catalogFacade.fetchCatalogByFilter(any(), eq(DCT_TYPE_ID), eq(TAXONOMY_DIGITAL_TWIN_REGISTRY),
                 any())).thenReturn(Collections.emptyList());
         when(catalogFacade.fetchCatalogByFilter(any(), eq(EDC_TYPE), eq(DATA_CORE_DIGITAL_TWIN_REGISTRY),
                 any())).thenReturn(List.of(CatalogItem.builder().itemId("asset-id").build()));
+
+        when(config.getControlplane().getProviderSuffix()).thenReturn(PROVIDER_SUFFIX);
+
+        final String agreementId = "agreementId";
         when(contractNegotiationService.negotiate(any(), any(),
                 eq(new EndpointDataReferenceStatus(null, TokenStatus.REQUIRED_NEW)), any())).thenReturn(
                 NegotiationResponse.builder().contractAgreementId(agreementId).build());
@@ -497,11 +500,13 @@ void shouldRetrieveEndpointReferenceForRegistryAssetForOldIdentifier() throws Ex
     @Test
     void shouldRetrieveEndpointReferenceForRegistryAssetForNewIdentifier() throws Exception {
         // arrange
+        // catalog item for taxonomy#DigitalTwinRegistry is found, so the fallback type is not used
+        when(catalogFacade.fetchCatalogByFilter(any(), eq(DCT_TYPE_ID), eq(TAXONOMY_DIGITAL_TWIN_REGISTRY),
+                any())).thenReturn(List.of(CatalogItem.builder().itemId("asset-id").build()));
+
         when(config.getControlplane().getProviderSuffix()).thenReturn(PROVIDER_SUFFIX);
 
         final String agreementId = "agreementId";
-        when(catalogFacade.fetchCatalogByFilter(any(), eq(DCT_TYPE_ID), eq(TAXONOMY_DIGITAL_TWIN_REGISTRY),
-                any())).thenReturn(List.of(CatalogItem.builder().itemId("asset-id").build()));
         when(contractNegotiationService.negotiate(any(), any(),
                 eq(new EndpointDataReferenceStatus(null, TokenStatus.REQUIRED_NEW)), any())).thenReturn(
                 NegotiationResponse.builder().contractAgreementId(agreementId).build());
diff --git a/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/testutil/TestMother.java b/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/testutil/TestMother.java
index 369624a740..6504954a78 100644
--- a/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/testutil/TestMother.java
+++ b/irs-edc-client/src/test/java/org/eclipse/tractusx/irs/edc/client/testutil/TestMother.java
@@ -67,6 +67,7 @@
 import org.eclipse.tractusx.irs.data.StringMapper;
 import org.eclipse.tractusx.irs.edc.client.configuration.JsonLdConfiguration;
 import org.eclipse.tractusx.irs.edc.client.model.EDRAuthCode;
+import org.eclipse.tractusx.irs.edc.client.policy.PolicyType;
 import org.eclipse.tractusx.irs.edc.client.transformer.EdcTransformer;
 import org.jetbrains.annotations.NotNull;
 
@@ -141,7 +142,7 @@ private static String getOfferId(final String assetId) {
 
     private static Permission createUsePermission(final Constraint constraint) {
         return Permission.Builder.newInstance()
-                                 .action(Action.Builder.newInstance().type("use").build())
+                                 .action(Action.Builder.newInstance().type(PolicyType.USE.getValue()).build())
                                  .constraint(constraint)
                                  .build();
     }