Try...

reports and forms/

company reports/

audit trail report

... as a start.

Look at the general ledger for the inventory account.  Maybe an invoice was posted to the wrong period and you have a system cost adjustment.

[email protected]    Sage 50 Master Certified Consultant

Thank you for responding.

Thank you. Fortunately I had print-outs and found that the difference was in month end inventory amounts where I must have entered an incorrect adjustment.