Field help (PRPLTI) 

Number of working days delay applicable for inventory control purposes. That is, the number of days before this product can be used, such as in a manufactured product, a purchase or before it can be shipped for a sale.

This field is not included in MRP processing (FUNMRPG) calculations, MPS processing (FUNMPS) calculations or the Statistical reordering (FUNSTKB) calculations.