The TDP for backups fail with the following error:

ACN5705W An error was encountered with Tivoli Storage Manager API initialization, rc = 612.

The TSM API’s message file dscenu.txt may have become corrupted, or is at the wrong version. Check dscenu.txt in program files\tivoli\tsm\baclient against the dscenu.txt file in program files\tivoli\tsm\api – if the versions and last-modified dates do not match, then this technote probably applies.

Make a copy of dscenu.txt from the baclient directory to the API directory, and test again.