Why the sync error occurs
This error usually occurs when an invoice is marked to be emailed, but the customer's email address is missing or invalid.
How to fix the sync error
There are two options to resolve this issue:
In QuickBooks
- Go to the Customer's information
- Update the email address to a valid email address
- Sync again
In Bill.com
- Pull up the Customer's profile
- Verify a valid email address is in the email address field
