Diagnosis
A material can be assigned to an assortment either using a rack jobmodule or another module. It is not possible to use both procedures atthe same time.
You have executed one of the following unallowed assignments:

• You want to include a material in an assortment module. However, this
material already belongs to a rack job module that is assigned to thesame assortment.

• You want to assign a material to a rack job module. This material is
already listed in your assortments assigned to your rack job module viaother module types.

System Response
The assignment cannot be executed.

Procedure
Remove the material from your change list.