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§ Check the Process Group permissions for the processes where you are observing the error. It is possible that there were some changes to the users profile and the user no longer has access to these processes.
§ Try deleting process scheduler cache if there were no changes to user or process security
Additional information requested:
§ Is the process going to error when you get the message?
§ Is only one user getting this error or other users also generate the same error/log message?
§ Was process scheduler recently reconfigured?
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