Restrict AP processor to view purchase order

Summary:

AP users were able to search for Purchase Orders from other BU during invoice creation. Is this a standard behavior of the system though they we only given a data access for a specific BU? Can we restrict the searching/viewing of Purchase Order to the data access given to the user?

Content (please ensure you mask any confidential information):

AP users were able to search for Purchase Orders from other BU during invoice creation. Is this a standard behavior of the system though they we only given a data access for a specific BU? Can we restrict the searching/viewing of Purchase Order to the data access given to the user?