If the invoice has been paid, Reverse the payment in Accounts Payable, then follow these steps:

Enter Credit Memo to reverse the original invoice

1. Open Account Payable, Main, then Invoice Data Entry.
2. Select the vendor in the Vendor No. field.
3. In the Invoice No. field, enter the invoice number with a dash (-).
4. In the Invoice Date field, use the same date as the original invoice.
5. Enter the Invoice Amount as negative.
6. Click the Lines tab.
7. The program will populate the General Ledger Accounts and Amounts. If it doesn't, select the GL Accounts and enter Amounts as negative.
8. Click Accept.
9. Click Printer Icon.
10. For the posting date, use the same date as the original invoice.
11. Print Accounts Payable Invoice Register.
12. Confirm that the posting date is the same wrong posting date.
13. If accurate, click Yes to update.
14. Print/Update the Daily Transaction Register.

Manually apply the credit memo to the original invoice

1. Open Accounts Payable, Main, Manual Check and Payment Entry.
2. Enter the Bank Code.
3. Type APP and a number from 1 to 999 in the Check No. field. For example, type APP001.
4. In the Check Date field, enter the same date as the original invoice.
5. Confirm the Check Amount field is zero. 
6. In the Vendor No field, select the vendor number.
7. Click the Lines tab.
8. At the Invoice No field (line 1), select the invoice with the wrong posting date.
9. At the Invoice No field (line 2), select the credit memo previously created.
10. Update the Invoice Amount field to match the credit memo, if needed.
11. Confirm the check distribution amount is zero, then click Accept.
12. Click Printer icon, select the correct posting date in the Account Payable Posting Date field.
13. Click Print or Preview the Manual Check Register.
14. If accurate, click Yes to update.
15. Print/Update the Daily Transaction Register.

Now, you can enter a new invoice with the correct posting date using a different invoice number.

 

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