Void a zero Cash Receipt (RS)

One of our user created by mistake a manual cash receipt at 0 to close 2 invoices ( negative amount and positive amount) but he did a mistake and did not select the correct invoices to reconcile. We are trying to void this cash receipt but we are getting an error message mentioning to cancel first the match to the receipt and then delete the cash recepit. I tried to void the pay item as well, same error message. What is the action to do in this case? Thanks for your help and support !