Sage 100 Sync Error - Error: Invoice # 'X' for vendor 'X' in division X is already posted, please use invoice adjustment to manually enter this invoice.

Occasionally when syncing invoices from Quadient AP into Sage 100, you may receive the sync error message 'Error: Invoice # '123412' for vendor 'AIRWAY' in division 01 is already posted, please use invoice adjustment to manually enter this invoice'

How to resolve this sync error

This error occurs when an invoice with the same invoice number, vendor, and total as the invoice you're trying to export has already been posted in Sage 100. We recommend you locate and review the invoice in Sage 100. If the invoice is indeed a duplicate, use the steps here to delete the invoice from Quadient AP. 

It's possible that the invoice is not a duplicate, and some information was entered incorrectly in Quadient AP. In this case, use the steps here to reset the invoice and enter the correct coding information. 

If you are unable to locate the invoice in Sage 100, please reach out to our Support Team for further assistance.