Hi Nischal,
Your requirement is not an easy one.
At this moment I cannot see a solution for this.
Assuming that the listener WS that is called by the external service resides on the Integration Server, the requirement is even harder.
I think maybe it should be rethinked. Having a model dialog blocking the user until an external system responds (if it responds at all, network or other problems can occur) is not such a good idea.
Regards,
Vlad Turian
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