Understanding Manual Payment Processing with Supplier Withholding

You can use the A/P Manual Payments program (P0413M) to enter and match a payment to a voucher, or use the Standard Voucher Entry program (P0411) to enter a manual payment without matching it to a voucher. Because the manual payment-entry process does not include calculations for withholding, you must manually calculate and enter withholding amounts for the vouchers that you pay using a manual payment process. You can add withholding information to the manual payments that you match to vouchers and those that you do not match to vouchers.