Thanks for the detailed advice. I will review our month end procedures and continue to attempt to resolve our discrepancy.

While there may be a data error, what puzzles me is the failure of some credit notes to appear on the Aged Trial Balance even though they are correct in the customer's account. This happens almost every month without a pattern that we have been able to discern so far. It does not appear date related. Either the subledger report is not working properly, or there is something in the way we are handling some credit notes that is preventing them from being reported properly. Others have posted similar problems, so I am hoping there is some advice for me.

Thanks
Jody