[OID4VCI] Some error events not reported #51692

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Area

oid4vc

Describe the bug

In case of some error scenarios in the OID4VCI credential request, the error event is not reported.

1. In case that OID4VCI client scope is configured without any mappers, there is this exception in the credential request (which is however not reported anywhere):

java.lang.NullPointerException: Cannot invoke "org.keycloak.protocol.oid4vc.model.Claims.stream()" because the return value of "org.keycloak.protocol.oid4vc.model.CredentialMetadata.getClaims()" is null
	at org.keycloak.protocol.oid4vc.issuance.OID4VCIssuerEndpoint.validateRequestedClaimsArePresent(OID4VCIssuerEndpoint.java:1961)
	at org.keycloak.protocol.oid4vc.issuance.OID4VCIssuerEndpoint.getVCToSign(OID4VCIssuerEndpoint.java:1873)
	at org.keycloak.protocol.oid4vc.issuance.OID4VCIssuerEndpoint.prepareCredential(OID4VCIssuerEndpoint.java:1769)
	at org.keycloak.protocol.oid4vc.issuance.OID4VCIssuerEndpoint.requestCredential(OID4VCIssuerEndpoint.java:1093)

Would be probably good to handle NullPointerException and also make sure that error event is created and reported and we have automated test to check that event was reported

2. In case that there is some issue in validation of OID4VCI proof in the credential request (For example "proof is too old", which happened to me during debugging), there is also not error event reported. We probably already have some tests for proof errors, so maybe it is just a matter of making sure that we also test that error event is thrown for this case?

Version

nightly (from 2026-08-12)

Regression

• The issue is a regression

Expected behavior

Error events reported

Actual behavior

Error events are not reported for some error scenarios in OID4VCI credential request

How to Reproduce?

See the description

Anything else?

No response