Information on a refund check stub

We have been asked by the Business Users to modify the  RTF template we use for the printing of refund checks.  The modification is to include the Receivables Invoice number on the check stub that represents the invoice the refund is being generated against.  Currently the invoice number that appears on the refund check stub is a system generated payables invoice number that has no meaning to either the customer or the Receivables group.

This has been requested so that 1) The customer knows which invoice the refund is for.  2) if there is any question about the refund the Receivables group will know which invoice the refund is for.