SAP Message WRF_APC296 - Assignment for &1, key figure &2 and material &3 has not been copied

Diagnosis
The assignment for assortment &V1&, key figure &V2& and material &V3&has not been copied because no corresponding material has been found.

System Response
This assignment entry has been ignored for the copy operation.

Procedure
Create a corresponding material and update the assignment manually.