User Access

i have created one user in P0092 APP USer profile, User security, Role Relationship and add the branch plant in P400951

but still user can access another branch plant Data also,

he should be able to access the Data only for specific branch plant that we defined in P400951 why? somebody can advise,

one more thing is i have copied every thing from the user having access for both the Branch plants. but i don't know how to revoke the access.

thanks