Description of problem: - When dtx.roolback is invoked with an unknown XID it fails with error code 542 instead of 404 - When dtx.roolback is invoked with a still associated XID it fails with error code 503 instead of 409 Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: