Failed to send notification to consumers?

I need to get a push notification whenever an instance of custom workflow is created in SMP 3.

  I have exposed decision step of a custom workflow using NW gateway (created a custom gateway OData service from standard WFSERVICE)

  I tried pushing a notification through Rest Client and its working perfect, referring How To... Enable End-to-End Push Notifications ... | SCN.

I tried running programs "RSWNSEL" and "/IWWRK/R_WF_ITEM_SELECTION_GW" but no log is displayed in smp push log.I tried running "/IWBEP/R_MGW_PUSH_TEST" also but didnt help. I configured rfcs following below thread

Configuring ECC and Gateway for notification pu... | SCN

when using /IWBEP/R_MGW_PUSH_TEST error comes.

in Gateway error log error message is "

"

Please help

Regards