User is getting the following errors:
DBG21023E DB2D 07:26:01 HISTORY: FILE HISTACCT INVALID HISTORY FILE.
DBG36017E DB2D 07:26:01 OPEN FAILED FOR DDNAME HISTACCT
Swapping the datasets for HISTACCT DD to HISTSTAT and HISTSTAT DD to HISTACCT caused the problem. Assigning the correct file to each DDNAME resolved the problem.