This field in the Copy Reprice/Batch Reprice dialog box in POS indicates if the system keeps the promotion or discount price and flag when you copy/reprice a transaction. The promotion price is the price you entered when you posted the item with the Promo button. The promotion price flag is the letter P posted next to the price.
The discount price is the price you entered when you posted the item with the Disc button. The discount price flag is the letter D posted next to the price.
Y = Retain the promotion or discount price and flag.
N = Do not retain the promotion or discount price and flag.