The URL Custom action would facilitate any device registered application external to ServiceMax application to be launched. The action would work even if the device was disconnected, and parameters could be passed.
E.g. URL Custom application "3rdPartyApp://" would launch 3rdPartyApp on the device if it was installed and registered.
What is the underlying problem do you intend to solve with this idea?
Enable integration with other apps on the same device.
How is the problem being addressed today, if at all?