Reliable Messaging Exception in SOAPUI

I am getting the following exception in SOAPUI while trying to execute the request "<faultstring>Reliable Messaging Exception - String: Invalid WS-RM message. There are no WS-RM headers within SOAP message.; Lang: en; Code: Server; Actor: Server; NS: http://schemas.xmlsoap.org/soap/envelope/</faultstring>
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Request someone's help to get it resolved..