SERVICE_OBJECT_SUPPLIER not specified

Hi, I have developed a webService using axis2 and spring. When I request de wsdl file of the webservice I get the right wsdl file, but when I want to use a defined operation of the webservice (using a java client or a browser) I get the following exception: [CODE]org.apache.axis2.AxisFault: The SERVICE_OBJECT_SUPPLIER parameter is not specified. at org.apache.axis2.util.Utils.getInboundFaultFromMessageContext(Utils.java:512) at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:370) at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:416) at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:228) at org.apache.axis2.client.OperationClient.execute(OperationClient.java:163) at springma.webservice.MyWSStub.myOp(MyWSStub.java:1077) at springma.test.webservice.MyWSTests.main(MyWSTests.java:24) [/CODE] In the client the line pointed contains the call to the operation, and in the stub is [CODE]_operationClient.execute(true);[/CODE] Anybody knows what it could be? Thanks in advance.