Good morning Mohammed,
the fact that you can access the student info in PIQST00 would indicate that the structural profile is defined correctly. however, maintain access is denied.
this can be caused by either of the following ways:
- the maintenance indicator in the structural profile is unchecked. (from your example above, we see that it is in fact checked).
- the PLOG object in the 'standard' authorization has insufficient maintain authorizations for ST objects.
Can you show me all values of the PLOG object(s) the user TESTGPC has assigned?