Hi Rick,
Thanks for your inputs.
Our requirement is to handle request before it comes to DPH. As we have more than one VS (VSM) , so based on endpoint/ basepath it should decide which VS should be called.
As in our case we have 2 VSMs Service_A and Service_B
Basepath of service_A : a/b/123/c
Basepath of Service_B a/b/123/d
So if endpoint is a/b/123/c , request should go to Service_A and
if endpoint is a/b/123/d , request should got to Service_B
But as here basepath is having session ID parameter which is dynamic, I am not able to implement it in Listen step of VSM