Field help (PRIORDSMR) 

This field can be entered at the level of the document line and/or the detail line according to the setup of the transaction used. This is the unitary amount per stock unit that can be used to value the stock (if the valuation method for miscellaneous receipt in process is Order Price).

The valuation method of the stocks is defined by product category or by product/site category. It can be set up by receipt movement type and movement code.