Value Mapping Replication SAP PI Single Stack

Hi,

I am trying to mass upload the Value Mapping in SAP PI 7.31 single stack. But my messages are getting stuck in PI box with error

Transmitting the message to endpoint <local> using connection SOAP_http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: java.io.IOException: HTTP Error response for SOAP request or invalid content-type.; HTTP 404 Not Found

Please help.

BR,

Rashmi