Issue

When attempting to delete [void] a Credit Memo that has already been refunded, an error occurs, preventing the deletion [voiding] process. The error message states: “Deleting [Voiding] a Credit Memo that has been refunded is not permitted.”

Solution-1

1. Edit the Credit Memo
2. Navigate to Items tab > Apply sub tab > unapply the Credit Memo from the Refund
3. Click Save.
4. Edit the Credit Memo again.
5. Hover mouse over Actions > select Delete.

Solution -2

1. Click Void button if user wants to void it. 
2. If Void button is missing, please navigate to Setup > Accounting > Accounting Preferences > General Tab > Void Transactions Using Reversing Journals = F