The id sequence generator no longer supports the type String. As a result, the domain object NonSubjectAcademicCredit must extend AbstractDomainLongIdBase instead of AbstractDomainStringIdBase. Also, the hbm mapping should be updated accordingly. (Note: The type in the database is NUMBER, so it should have been Long from the beginning!!)
Workflow complained about missing classes so the following had to be added to the pom file (Note: it really should be added to the workflow pom file and not common-legacy)