SAP Message W7073 - Enter either a material or a material group

Diagnosis
Either you entered no material group and no material or you entered amaterial group and a material.

System Response
INCLUDE ISR_VERARBEITUNG

Procedure
Enter either a material, more than one materials or a material group.
If your selection leads to a list of materials, the system firstdisplays the total stock of all materials. You can then go to theactual stock overview for a selected material.