Business Validation Error: You must set a transaction amount while syncing the voided payments.

Issue:

This error error occurs when you Insert void payments from salesforce to QucikbooksOnline.

Reason:

When you insert the void payments, you are setting the Total Amount  equal to zero (0.0).

As QuickBooks does not allow zero values for the Total Amount , it will throw the following error:

<BatchItemResponse bId="1">

        <Fault type="ValidationFault">

            <Error code="6000" element="">

                <Message>A business validation error has occurred while processing your request</Message>

                <Detail>Business Validation Error: You must set a transaction amount.</Detail>

            </Error>

        </Fault>

</BatchItemResponse>

Solution:

 Instead of sending the zero value to the Total Amount send non -zero values while inserting. Once the values are inserted,  you can do the upsert with Zero(0.0) for the Total Amount.