I'm trying to add some error handling for a ForwardCall to an invalid VDN on CM. This way I could try an alternate destination in case of a ForwardCall error.

In my workflow, the ForwardCall returns SUCCESS, but the Call is ended.

Next, I tried to use SetCallPolicy with Drop_Call_When_No_Participant_Remains, to keep the call active and try an alternate destination. But no events seem to be triggered.

Using AllowCall after the ForwardCall returns: java.lang.IllegalStateException: cannot invoke allow in current state


Do you know a way to check for the result of the ForwardCall, and try an alternate destination?

Anyone got any ideas how to do this?