Restricting at object level

Question: hi

is there anyway that a user can be restricted at object level ,for example
if i want to restrict a user to edit and display on particular material ,,say material named "car"
how this is possible in sap? one of our clients wants to give acess to some limited materials to his vendors?
is it possible??

I had a hint that authorization groups can be used .
thanks in advance

Answer:
Two options I'm immediately aware of:
1) Apply an auth at the Material Type level
-preferable as this would require least granularity, assuming the materials you're trying to restrict are organized appropriately by type to control at this level.

Auth groups are assigned within the following transaction:
OMS2 Maintain Material Types
and would then be controlled through the following object
M_MATE_MAR Material Master: Material Types

2) Apply an auth at the Material level
-every material you're interested in restricting would need to have an auth group assigned.

Auth groups are assigned within the following transaction:
MM02 Change Material &
and would then be controlled through the following object
M_MATE_MAT Material Master: Materials

Regards,
Vincent
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