In a pay-upon-return rental process, a rental purchase is not actually finalized until all rental equipment is returned by the guest. This means that the process of creating a Rental form number as well as printing any barcodes associated with that Rental form number must occur prior to the finalization of the rental item(s). This is accomplished by adding a rental contract item to a sale, attaching the appropriate guest record to the contract item, and clicking the Start Contract main action button. The action of starting contracts creates the underlying rental data necessary for the rental process to proceed, prints the layout configured for the contract and saves the sale for later recall once all equipment has been returned.