How Do I void a Credit Memo already applied to an AP Vendor Invoice?

SUGGESTED

We have had a incident in which a void on a credit card vendor transaction and the accompanying credit memo on the vendor transaction were entered using the wrong date. The Vendor Transactions were dated in March 2019, as was the associated Credit Card transaction. The Void and Credit Memo were done with an April 2019 date. My AP balance is therefore off and I need to know how can I void an AP credit memo that is already applies to an AP vendor invoice? Also, does the fact that the voided credit card transaction was done with the wrong date mess up my GL?

Any suggestions are appreciated. 


Thank you.

Brigette Walters