Diagnosis
You want to list a structured material to which no components have yetbeen assigned.
There is no guarantee when you maintain the material structure laterthat the new components will actually be listed.

System Response
Structure materials without components are not listed in materialmaintenance.

Procedure
Assign components to the structured material. Having done this, you canlist the structure material.

Hints
Structured materials without components cannot be used in logisticsprocesses.