It sounds like the prepayments were saved without a check/reference number. If they were in a current year you could just enter a check number to fix the problem. But since they're in a closed year, you'll have to print them.

Go to the Reports & Forms menu, choose Forms, then Checks. 

Select a check format and click the Preview and Print button.

In the Preview and Print Checks window, click the Refresh List button. The prepayments should appear in the list. If there are other things in the list that you don't want to print, you can uncheck them, or change the "Include checks through" date on the left and/or set a vendor ID filter to just that vendor.

Enter a dummy check number in the "Number of the first check: field and click the Print/Email button to print the "checks." If you don't want to waste paper you can go to the Print Setup tab and change the printer to Microsoft Print to PDF.

Printing the payments will assign the check numbers. Now they should show on the "Apply to Invoices" tab of the Payments window.

Steve Collins
IQ Accounting Solutions LLC
Certified Sage 50/Peachtree Consultant – providing personalized Sage 50 support and training, no contract required.
918-851-9713 (Office hours Monday – Friday 8am – 5pm Central Time)
[email protected]
www.IQAccountingSolutions.com
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That did it! Thanks, Steve at IQ Accounting Solutions.