Hosted interop deployments use Bentley Seq servers shared by all Bentley applications.  As a result, finding messages specific to one customer's environment is much trickier.

To narrow down to messages only from that environment, specify the ComponentID in the BOD's Application area.

Use the Service Bus Explorer to find the exact ComponentID used in that environment.

The syntax for adding this filter is:

@Properties['BOD/SenderComponentID'] = 'SAP ORYX'