fix: copy CredentialObject ID from received credential offer messages

e2e-tests/dcp-issuance-tests/build.gradle.kts

@@ -24,6 +24,7 @@ dependencies {
     testImplementation(project(":spi:issuerservice:issuerservice-issuance-spi"))
     testImplementation(project(":spi:participant-context-spi"))
     testImplementation(project(":spi:sts-spi"))
+    testImplementation(project(":protocols:dcp:dcp-spi"))
 
     testImplementation(libs.edc.junit)
     testImplementation(libs.edc.lib.jsonld)

e2e-tests/dcp-issuance-tests/src/test/java/org/eclipse/edc/identityhub/tests/dcp/api/DcpCredentialRequestApiEndToEndTest.java

@@ -19,12 +19,10 @@
 import com.nimbusds.jose.jwk.Curve;
 import com.nimbusds.jose.jwk.ECKey;
 import com.nimbusds.jose.jwk.gen.ECKeyGenerator;
-import com.nimbusds.jose.jwk.gen.OctetKeyPairGenerator;
 import org.eclipse.edc.iam.did.spi.document.DidDocument;
 import org.eclipse.edc.iam.did.spi.document.Service;
 import org.eclipse.edc.iam.did.spi.resolution.DidPublicKeyResolver;
 import org.eclipse.edc.iam.did.spi.resolution.DidResolverRegistry;
-import org.eclipse.edc.identityhub.spi.participantcontext.model.KeyDescriptor;
 import org.eclipse.edc.identityhub.tests.fixtures.DefaultRuntimes;
 import org.eclipse.edc.identityhub.tests.fixtures.issuerservice.IssuerService;
 import org.eclipse.edc.issuerservice.spi.holder.HolderService;
@@ -85,6 +83,7 @@ public class DcpCredentialRequestApiEndToEndTest {
 
     protected static final DidPublicKeyResolver DID_PUBLIC_KEY_RESOLVER = mock();
     protected static final DidResolverRegistry DID_RESOLVER_REGISTRY = mock();
+    private static final String ISSUER = "issuer";
 
     abstract static class Tests {
 
@@ -130,25 +129,6 @@ static void beforeAll(IssuerService issuer) {
             return "/v1beta/participants/%s/credentials".formatted(ISSUER_ID);
         }
 
-        @NotNull
-        private static KeyDescriptor.Builder createKey() {
-            return KeyDescriptor.Builder.newInstance().keyId("test-key")
-                    .privateKeyAlias("private-alias")
-                    .active(true)
-                    .publicKeyJwk(createJwk());
-        }
-
-
-        private static Map<String, Object> createJwk() {
-            try {
-                return new OctetKeyPairGenerator(Curve.Ed25519)
-                        .generate()
-                        .toJSONObject();
-            } catch (JOSEException e) {
-                throw new RuntimeException(e);
-            }
-        }
-
         @AfterEach
         void teardown(HolderService holderService, CredentialDefinitionService credentialDefinitionService, AttestationDefinitionService attestationDefinitionService) {
             holderService.queryHolders(QuerySpec.max()).getContent()
@@ -500,15 +480,11 @@ class Postgres extends Tests {
         @Order(0)
         @RegisterExtension
         static final PostgresqlEndToEndExtension POSTGRESQL_EXTENSION = new PostgresqlEndToEndExtension();
-
-        private static final String ISSUER = "issuer";
-
         @Order(1)
         @RegisterExtension
         static final BeforeAllCallback POSTGRES_CONTAINER_STARTER = context -> {
             POSTGRESQL_EXTENSION.createDatabase(ISSUER);
         };
-
         @Order(2)
         @RegisterExtension
         static final RuntimeExtension ISSUER_EXTENSION = ComponentRuntimeExtension.Builder.newInstance()

extensions/api/identity-api/identity-api-configuration/src/main/resources/identity-api-version.json

@@ -2,7 +2,7 @@
   {
     "version": "1.0.0-beta",
     "urlPath": "/v1beta",
-    "lastUpdated": "2026-07-20T13:00:00Z",
+    "lastUpdated": "2026-08-12T13:00:00Z",
     "maturity": null
   }
 ]

protocols/dcp/dcp-identityhub/credential-offer-api/src/main/java/org/eclipse/edc/identityhub/api/credentialoffer/CredentialOfferApiController.java

@@ -99,6 +99,7 @@ public void offerCredential(@PathParam("participantContextId") String participan
                 .participantContextId(participantContextId)
                 .issuer(offerMessage.getIssuer())
                 .credentialObjects(offerMessage.getCredentials().stream().map(co -> CredentialObject.Builder.newInstance()
+                        .id(co.getId())
                         .bindingMethods(co.getBindingMethods())
                         .credentialType(co.getCredentialType())
                         .issuancePolicy(co.getIssuancePolicy())

protocols/dcp/dcp-transform-lib/src/test/java/org/eclipse/edc/identityhub/protocols/dcp/transform/to/JsonObjectToCredentialObjectTransformerTest.java

@@ -45,7 +45,7 @@ public class JsonObjectToCredentialObjectTransformerTest {
     private final ObjectMapper mapper = JacksonJsonLd.createObjectMapper();
     private final TypeManager typeManager = mock();
     private final JsonObjectToCredentialObjectTransformer transformer = new JsonObjectToCredentialObjectTransformer(typeManager, "test", DSPACE_DCP_NAMESPACE_V_1_0);
-    private final TypeTransformerRegistry trr = new TypeTransformerRegistryImpl();
+    private final TypeTransformerRegistry trr = new TypeTransformerRegistryImpl(mock());
     private final TransformerContext context = new TransformerContextImpl(trr);
 
     @BeforeEach