Dynamic Configuration Soap Axis Error

Hi Guys,

we are using SOAP Axis Receiver Adapter on one of our integration. Today we got following error message,

<SAP:AdditionalText>com.sap.engine.interfaces.messaging.api.exception.MessagingException: 
java.lang.NullPointerException: while trying to invoke the method 
com.sap.xi.XI.Message._30.Main.getMessageId() of a null object loaded from local 
variable 'main'</SAP:AdditionalText>

can anyone help me on this?

Thank you

PM