Creating an ASN with an RF device using PO You can create ASN in WMS directly on an RF unit using the purchase order number. To create a new ASN: Select WMS Main Menu > Receiving. The Select Printer window is displayed. Select Enter on the Enter Printer ID field. The Receiving Menu window is displayed. Select More. Select Create ASN from PO#. The PO CREATE ASN window is displayed. Specify the purchase order number in the PO# field. Select Enter. The ASN number is created for the specified PO after successful validation. Note: If the ASN is created already for the specified PO, an error message is displayed. You can also search for production orders using the F2 key.