After changing the due date of the invoice, and selecting to save and Close this error is received. When viewing the Payments/Credits tab of the invoice there is no payment scheduled.
1. On the schedule tab, click Schedule payments. 2. Enter 2 scheduled payments on the schedule grid. 3. Click OK on the invoice schedule and save the invoice. 4. Click Schedule payments again. 5. Change the invoice schedule back to 1 scheduled payment and click OK. 6. Save and Close the invoice.