Supplier site UDA--restrict access for a specific responsibility

Question

When control is passed from the Supplier Site Additional Attributes Screen to the Manage Sites screen in iSupplier is any context/session information passed about the Attributes/Attribute groups being changed?

Can this session information be passed/accessed by the Controller extension on the Manage Sites form Page: /oracle/apps/pos/supplier/webui/ByrMngSitesPG

We are on Oracle 12.2.8

Requirement

We have some UDAs at the supplier site level.

The requirement is that a certain responsibility X must have access to edit only these UDA attributes.

No other supplier master data should be editable from responsibility X.

We do not have security profiles enabled for Supplier UDAs.