Security at Customer Site Level

     Hi,

    I have a setup wherein my customers in Accounts Receivable have multiple sites/location.

   Example: Customer X

         Site: Site A, Site B, Site C.

   Now, user wants that upon Transaction and Receipt entry, she can only access the customer site / location assigned to her.

    She should not see all transactions of customer for all sites..

  Any suggestion on how this can be handled, other can creating an OU by branch?

   Thanks for the help!