Diagnosis
Material &V1& cannot be used in assignments for purchasing list itemV2 v3.
Possible reasons are:

• If the material is a variant or a prepack, the material associated with
the purchasing list item must be a generic material

• If the material is a variant or a prepack, it must belong to the generic
material associated with the purchasing list item

• If the material is neither a variant nor a prepack, it must be the same
material as the one associated with the purchasing list item

• In 'undo release' mode, you can only use existing materials (no planned
materials)

System Response
The assignment is aborted.

Procedure
Select a different material.