Invoice Syncing Errors Codes
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      3. Invoice Syncing Errors Codes

      Duplicate document number error

      This error occurs when the invoice number being sent from Procore to QuickBooks (including the invoice number automation that has been set in the Prime Contract, Commitment, or Direct Cost tools) is considered a duplicate in QuickBooks.

      Screenshot 2024-04-15 2123043.png

      The core issue that is causing this error message to be thrown is that QuickBooks does not allow two invoices with the same number for the same vendor. This means that for some reason, the invoice number that is being sent to QuickBooks is triggering QuickBooks to see it as a duplicate number. Here is an example error on a ticket with this issue.

      We have to always make sure that each invoice number is unique in QBO. Also, we have to take note that QBO only allows 21 characters maximum for invoice numbers.

      To resolve this, either the invoice number automation settings must be adjusted or just change the invoice number to make it unique in QBO that still falls within the required 21 or less characters.