Hi Shashank,
for connect server what URL ur using form ATE. in SMP 3.0 SP3 onwards communication from Agentry Client to SMP Agentry Server Using Following URL :
https://<SMP SERVER NAME>:8081/<Your Agentry App Name>
for WorkManager App Name Generally : SAPWM etc....
Top of this first you need to generate the SSL certificate for make communication from SMP server to Agentry Client & this is Mandatory.
you can find default SSL certificate from SMP Server from following Link:
C:\SAP\MobilePlatform3\Server\configuration --> smp_cert.
install this certificate in Agentry client Device / System & in SMP Server also.
THanks
Krishna