This POS option in Options Configuration determines the order in which the customer's receipt and the store's receipt print on a bankcard transaction.
This option makes it possible for you to use the EN setting even if you have older/slower receipt printers. The EN setting is advantageous because you can change posted line items yet still produce a "clean" receipt for your customers because everything prints at the end of the transaction, after all changes have been made.
1 = Signature/Store receipt prints first, followed by the Customer receipt.
2 = Customer receipt prints first, followed by the Signature/Store receipt (default).
The receipt printer must be set to "EN" (receipts print at end of transaction) in Device Configuration in order to use choice 1.