Calculation of collective invoice of the subcontractor differs from the calculation of receiving of other (ordinary) collective invoice by the following features: with this calculation you supplement the internal issue slip of the work order for the subcontractor with the value of the service of the subcontractor again calculate own price of asset, delivered by the subcontractor
	For calculation of the ordinary collective invoice see Calculation of receiving of the collective invoice.

Confirming of the calculation of the collective receiving, which you have created from the internal receiving with the help of function for adding of packing slips has a double role:

• enter the purchase price on the collective invoice and transfer it to the internal issues, from which the collective invoice has been created. Internal issues include all subordinate items, needed for creating of the semi-product, delivered by the subcontractor.
• on the internal receiving of the semi products, delivered by the subcontractor, again calculate their cost price. The cost price is a sum of all recorded spendings, recorded with the internal issues, and might have changed with the new setting of the subcontractor's price.

Because confirming of the calculation changes the purchase values of internal receiving, confirming is not possible, if any internal receiving of surveyed collective invoice is in final material stage. In such case the program returns an error (see Material period (DD.MM.YYYY) is already completed! You can not change it anymore!).