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