QuickBooks Online Sync Error: Invalid entity data. Email: Invalid email format.
Why the Sync Error occurs
This error occurs when a customer is created in QuickBooks Online (QBO) and more than one email address is entered.
How to Fix the Sync Error
- Update the Email Address field for this customer in QBO, removing all but one email address
- Save
To prevent this error, enter only one email address for each customer when entering the customer details in QBO.
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