QuickBooks Online Sync Error: The vendorId cannot be updated on the Bill because there are existing payments

Why the Sync Error occurs

This error occurs because updates made to a bill are not allowed to sync to QuickBooks Online (QBO) if the bill is already marked as paid.

How to Fix the Sync Error

  1. Verify that bill is accurate and marked as paid in QBO
  2. Manually update the bill, if needed
  3. Contact Customer Service to request that the error be cleared