QuickBooks Online Sync Error: The customer on one of invoices paid in this transaction does not match the customer on that invoice in QBO. This could happen because of an incorrect customer merge in QBO

Why the Sync Error occurs

This error occurs when a customer is different on a payment than how it is entered on the invoice in QuickBooks Online. This difference may be due to:

  • The bill being changed to a different customer in QuickBooks Online
  • The customer being merged in QuickBooks Online, but not merged in PayMaker
  • The customer being made inactive in PayMaker

How to Fix the Sync Error

There are three options to resolve this issue:

  • If the original customer is active in QuickBooks Online, update the invoice to the original customer
  • Select to not sync the payment and manually mark the invoice as paid in QuickBooks Online
  • If there was a merge and the payment should be synced, contact Customer Service to merge the customers in PayMaker