To reverse a paid invoice from a prior year and mark it unpaid in Peachtree Complete Accounting for Windows, you can follow these steps:
1. Open the program and navigate to the "Invoices" or "Sales" section.
2. Locate the paid invoice from the prior year that you want to reverse.
3. Select the invoice and look for an option to "Void," "Reverse," or "Unpay" the invoice.
4. Click on that option and confirm the action to reverse the payment and mark the invoice as unpaid.
5. Save the changes and the invoice should now be marked as unpaid.
Note that the specific steps may vary slightly depending on the version of Peachtree Complete Accounting you are using.
