HTTP Receiver adapter GET method Returns error STATUS_CODE_NOT_OK-Internal Server Error

Hi Team,

I am trying to calling external web services using HTTP Receiver adapter using get method .I am passing values in URL by static in query string parameters .

here I am getting error while testing in WS Navigator "com.sap.engine.interfaces.messaging.api.exception.MessagingException: com.sap.aii.adapter.http.api.HttpAdapterException: STATUS_CODE_NOT_OK-Internal Server Error ".

I have checked blog HttpAdapterException: STATUS_CODE_NOT_OK for this error , but in GET  method we didn't find such option in adapter level.

I am having doubt about "Main payload parameter Name " what we need to configure for this mandatory text box.

Can you please suggest need full configurations to resolve the error .

Thanks in advance ..

Thanks & Regards

Ganesh Gullipalli.