Clarification
Please note that the DID input is not required in actual software. The holder's DID is delivered in Authorisation Request, ID Token Response and finally in Credential Request. Conformance Test UI is using it only to track statuses for the different tests and to show the report.
DID and Client ID
The DID and DID document are self-generated, and must not be registered. For a successful conformance test, you MUST provide a valid DID based on the did:key:jwk_jcs-pub method.
The Client ID must be the same as the HTTPS URL locating the OAuth 2.0 Client used for the conversations.