Field help (SUPCTR) 

This parameter is connected with the "higher container" parameter of a picking location.
If it is checked without packing, it is used to express the output movement in the higher container set up in the location (if possible) or in one of the containers defined for the higher container of the picking location.
If it is checked with packing, the product modulo is considered and the movement is then expressed in one of the product modulos.

If it is not checked, the movement is then expressed according to the reference container of the picking location.