Field help (POHCPR) 

This is the stock cost per unit of the product, expressed in the currency of the company.
It is equal to the result of the following calculation:

Stock cost of the line / Quantity (in STK)

This field cannot be modified. It is displayed if authorized by the transaction you selected.
The stock cost can also be viewed in the stock detail window.

SEEWARNINGThis cost is calculated when you save this order. It is not calculated whilst you are entering this order line.