How To Setup ERP TEST Environment To Send PO's To OBN TEST Environment?

I am trying to test the new Responsive Self Service Procurement module.

Our test users have created requisitions in our TEST environment.

Before I approve the subsequent PO's and trigger them to go out to the OBN, how can I confirm that my TEST Oracle ERP environment will send the PO's to our TEST OBN Mode, and not send them to our PROD OBN Mode?

From what I can tell, in the Manage Collaboration Messaging Service Provider screen, the PROD and TEST setup's are the same. Can the OBN automatically determine if a transaction came from a TEST ERP environment or a PROD ERP environment?