There is an IBM apar AK91813 that resolves the problem.
When using the Common Access Repository Manager(CARMA) interface with Rational Developer for System z(RDZ) V7.5.1 with a batch submit, the submit is not done under the userid of the client. It is done under the userid of the server-STC.
In version 7.1 the submit was done under the client userid.
IBM apar AK91813 resolves the problem.