MustUnderstand fault

[Hassan Faouaz]

Hi,   When receiving a signed message from WebSphere 6.0, Axis is throwing the following fault, any Idea why and how to fix this?  The soap message returned has mustUnderstand=”1”.   AxisFault  faultCode: {http://schemas.xmlsoap.org/soap/envelope/}MustUnderstand  faultSubcode:  faultString: Did not understand "MustUnderstand" header(s):  faultActor:  faultNode:  faultDetail:       {http://xml.apache.org/axis/}stackTrace:       at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnderstandChecker.java:96)       at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)     thanks in advance     Hassan Faouaz