Webservice doesn't work with: soap-env:mustUnderstand="1"

Hi friends,

I created a Webservice Consumer with the assistant, indicating the URL of my WSDL.

Then I created the logical port in SOAMANAGER, using the same URL.

When I test the Webservice Consumer I get the following error:

SoapFaultCode:3  MustUnderstand headers:

[Action,

To] are not understood.

The XML petition to the Webservice is:

<soap-env:Envelope xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/">     <soap-env:Header>          <sap:Trace xmlns:sap="http://www.sap.com/webas/630/soap/features/runtime/tracing/">               <sap:TraceLevel>Error</sap:TraceLevel>               <sap:TraceContext>                    <TRC_PATTERN>WSTEST</TRC_PATTERN>                    <TRC_KEY>4D635EAAEFA70022E10000009353966F</TRC_KEY>                    <TRC_SSID>EDU_02</TRC_SSID>                    <TRC_USER>DES005</TRC_USER>                    <TRC_TS>20110223153559</TRC_TS>                    <TRC_COUNTER>99</TRC_COUNTER><TRC_EXTERN></TRC_EXTERN><TRC_REQBASED></TRC_REQBASED><TRC_PPVERS>2</TRC_PPVERS>               </sap:TraceContext>          </sap:Trace>          <wsa:To soap-env:mustUnderstand="1" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">               http://soades.upc.edu:8193/EconomiaFinances/InformacioPersona          </wsa:To>          <wsa:From xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">               <wsa:Address>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:Address>          </wsa:From>          <wsa:ReplyTo xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">               <wsa:Address>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:Address>          </wsa:ReplyTo>          <wsa:FaultTo xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">               <wsa:Address>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:Address>          </wsa:FaultTo>          <wsa:Action soap-env:mustUnderstand="1" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">http://comprovacio.ws.upcnet.com/InformacioPersonaImpl/consultaCNRequest</wsa:Action>          <wsa:MessageID xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">uuid:4d635ec2-efa7-0022-e100-00009353966f</wsa:MessageID>     </soap-env:Header>     <soap-env:Body>          <n0:consultaCN xmlns:n0="http://comprovacio.ws.upcnet.com" xmlns:prx="urn:sap.com:proxy:EDU:/1SAI/TAS65AC049944F09BF8D2C4:701:2010/02/19">               <n0:cn>joan.ayala</n0:cn>          </n0:consultaCN>     </soap-env:Body></soap-env:Envelope> 

People from my systems team, told me that if instead of having:

 soap-env:mustUnderstand="1" 

I had:

soap-env:mustUnderstand="0"

Then, It would work properly. Does anybody know if it is possible to change this value of the XML ?

Or any other solution can be helpful. Thanks !!!