Ajuda p/o campo (PTDLINPNH) 

Ce champ indique le numéro de la ligne de réception.

A return line only involves one receipt line: it is therefore mandatory to enter this line number if a receipt number has been entered. Use the Actions icon to select one of the chosen receipt lines. This selection can be restricted to the entered product code if the return transaction has placed the product code before the receipt line number entry.
Once the receipt line is entered, certain fields will be automatically initialized according to the information entered at the level of the receipt line. You can still modify some of the fields and/or enter additional information.
The receipt line number is not mandatory if the PNHDIR - Direct supplier return (ACH chapter, RET group) parameter authorizes the entry of direct supplier returns and no receipt number has been entered.