Warning Message for Unapplying a Provider Check

If you try to unapply a check to a provider, the following warning appears:

"If you need to void a check applied to this invoice, do not unapply (select Cancel). Voiding the check will unapply the invoice automatically."

If you have already unapplied the check, go back into the Adjust/Apply Open Item function and apply the on-account item to the invoice it was originally applied to.