Field help (LINCSTPUR3) 

The purchase cost corresponds to the amount totaling the stock cost and the costs that remain payable by the buyer and are not used for stock valuation (transportation cost, non-deductible taxes, etc.).
It cannot be modified and is displayed only if the transaction authorizes it. It is expressed in the currency of the company.

SEEWARNING This amount is never calculated during the entry process but only when saving the invoice.
Its calculation method varies according to whether or not the landed costs are taken into account (parameter PIHCPR - Invoice price adjustment, chapter ACH, group INV).

Parameter PIHCPR is set to:'With landed costs':

Parameter PIHCPR is set to:'Without landed costs'

SEEREFERTTO The non-deductible tax amount is displayed in the window entitled Line cost available on the Actionsicon.

SEEINFONo purchase cost is calculated in the case of additional invoices and credit memos.