Security check for attributes

Hi,

Is it possible in SRM to have a security check at the attributes for storage location, plant, cost center ...

My situation is : in the setting of my user the attribute for storage location is 0001 and plant 1000.But when the user is creating the shopping cart through the catalog or  by doing search, he can see and choose all products related to all the plants and storage locations.

Same problem with the cost center, the cost center maintain in the organization structure is coming by default but the user can change it.

Is it possible in SRM to do a restriction for those attributes and can i do it?

Thank you in advance for the response

Regards

Foumban Bouba