Field help (FOCPRO) 

The possible values are:

No

This price list does not define free product conditions.

N for M:

Allocation of a free quantity of the same product

Other Product

Allocation of another free product

Order total

Only valid for a grouped price list. It is used to assign a free quantity depending on the totaling conditions (quantities or amounts) of the document lines and according to the order total.This order total depends on the parameter entered in the field.

The calculation of the free quantity is based on the free type.