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 aren't allowed to sync to QuickBooks Online if the bill is already marked as paid.
How to fix the sync error
- Verify the bill is accurate and marked as paid in QuickBooks Online
- Manually update the bill in QuickBooks Online, if needed
- Contact Customer Service to request that the error be cleared