Unable to find service in Service Registry!

Dear Experts,

I am working on one BPM development for Purchase order approval.

We have a Java Only PI 7.4 and I am trying to find the service "PurchaseRequestCreateRequestConfirmation_In".

I am unable to find it in my Service Registry.

I searched it in ES Workplace and downloaded the wsdl, made External Definition and Service Interface then Published the service interface,

But still I am not able to find it.

Please advice.

Regards,

Dipen.