credentialID
CSC: OPTIONAL. The unique identifier associated with the credential. D3.1: UC Specification WP3: MUST be present when signatureQualifier parameter is not present. Both signatureQualifier and credentialID values MAY be present.
CSC: OPTIONAL. The unique identifier associated with the credential. D3.1: UC Specification WP3: MUST be present when signatureQualifier parameter is not present. Both signatureQualifier and credentialID values MAY be present.