CX_SY_REF_IS_INITIAL exception at receiver proxy
I am getting CX_SY_REF_IS_INITIAL exception while processing message by ABAP Proxy.
Below find text from DUMP.
An exception occurred that is explained in detail below.
The exception, which is assigned to class 'CX_SY_REF_IS_INITIAL', was n
procedure "XI_PROCESS_PAYLOAD" "(METHOD)", nor was it propagated by a R
Since the caller of the procedure could not have anticipated that the
exception would occur, the current program is terminated.
The reason for the exception is:
You attempted to use a 'NULL' object reference (points to 'nothing')
access a component.
An object reference must point to an object (an instance of a class)
before it can be used to access components.
Either the reference was never set or it was set to 'NULL' using the
Becuase of this message is failed with system error 'HTTP response contains status code 500 with the description Internal Server Error' in XI.
Any suggestions will be appriciated.