multiple lot

As part of the organization's standard process, a free gift item is included with every purchase of a certain number of items.

Our process within the sales order is as follows: we create a line item with the quantity and unit price of the purchased item, and then create another line item for the same item without a unit price; this second line is the free gift item.

Example:

Line 1, D0104100, 3 boxes, price 535.16

Line 2, D0104100, 1 box, price 0.

The problem arises when the confirm pick slip stage:

In this type of scenario, the item in Line 1, D0104100, 3 cajas, price 535.16, is taken from lot