Apply Authorization group in vendor master but not worked

[arsalantaufiq]

Requirement:

specific users can see selected vendor line item display (FBL1N).

Problem:

I assign unique authorization group to those vendors in master data fk03. then use the object F_BKPF_BEK and give authorization group same as defined in selected vendor master data.

then run the report from that ID which assign the above role.

Result shows some more extra vendors which not assign the authorization group. Please guide where i am wrong or which step is missing in my working?

[arsalantaufiq]

Authorization group works but still few vendors data also show which are not included in authorization group. so what should i do?