CIDXAdapter failed, due to: Received HTTP response code 401
I have configured a receiver CIDX scenario with our client where in certificate authentication is used.
When I have triggered a message, the message is successfully sent to Target system using HTTPS connection and received a signal message 'ReceiptAcknowledge' successfully. Now Adapter engine should send Aknowledge to Integration engine but it is failing with error description as below:
Transmitting the message to endpoint http://<server>:8000/sap/xi/engine?type=entry using connection CIDXAdapter failed, due to: Received HTTP response code 401 : Unauthorized.
Your inputs are appreciated to resolve the issue.