/SAPAPO/OM_DELETE_OLD_SIMSESS - Fails

hi,

/SAPAPO/OM_DELETE_OLD_SIMSESS - periodic job fails says as below log. I could not find OSS note in my search.

Looks to me, the lock corresponds to a simulation version is missing. Job tries to delete simulation version/ lock together.. however it fails.

If this is the case, how to clear old SIMM versions?

Job Log:

07/21/2011 08:31:13 JYKhRvRmN6dX0000f6VRCW lock does not exist

07/21/2011 08:31:14 Cannot delete simulation version

07/21/2011 08:31:14 Job cancelled after system exception ERROR_MESSAGE

Thanks,

RajS