R12 Inventory Master Item Form

Dear All,

We are in R12.2.4 (Module scope: INV, PO,FA,AP,GL)

We have basic structure with 3 inventory orgs (A,B,C)

Now, through Organization access, we have restricted the orgs and so users of A cannot see B and so on.

But we have a requirement that:

i) Each org A,B & C has its own super user, who has access to Master Item screen for their stores item management (creation/update)

ii) Super users should not enter into other Orgs.

But in actual, if giving access to 'Master Item' form, super users from one organization is able to enter into other organization & able to change the attributes.