#UBS044W & #UBS055W: APPROACHING MAXIMUM NUMBER OF HISTORIES

The "#UBS044W: APPROACHING MAXIMUM NUMBER OF HISTORIES" and the "#UBS055W: APPROACHING MAXIMUM NUMBER OF HISTORIES" messages means that your History Database is approaching the maximum number of History Records it can hold. In order to prevent the History DB from reaching the maximum number of History Records, you can REORG the database or copy the database into a larger one.

#UBS044W means your primary History Database is the one outputting the error. if you have Dual History enabled and your secondary History Database is the one approaching the max number of JOB IDs, then #UBS055W will be the error code instead.