Excepción de clase CX_AI_SOAP_FAULT (SoapFaultCode:3 ) al invocar un WebService.

Para estos 2 errores al intentar implementar un par Web Services que había creado en .Net:

Error 1.

SoapFaultCode:3  The header 'Action' from the namespace
http://schemas.xmlsoap.org/ws/2004/08/addressing' was not understood by the
ecipient of this message, causing the message to not be processed.  This
rror typically indicates that the sender of this message has enabled a
ommunication protocol that the receiver cannot process.  Please ensure that
he configuration of the client's binding is consistent with the service's
inding.

   Excepción de clase CX_AI_SOAP_FAULT

Error 2.

SoapFaultCode:3  System.Web.Services.Protocols.SoapHeaderException: SOAP
header Action was not understood.##   at
System.Web.Services.Protocols.SoapHeaderHandling.
SetHeaderMembers(SoapHeaderCollection headers, Object target,
SoapHeaderMapping[] mappings, SoapHeaderDirection direction, Boolean client)##
at System.Web.Services.Protocols.SoapServerProtocol.CreateServerInstance()##
at System.Web.Services.Protocols.WebServiceHandler.Invoke()##   at
System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()

    Excepción de clase CX_AI_SOAP_FAULT

Solución.

En el soamanager he ido al endpoint que había creado. Luego en pestaña Messaging y en Message ID Protocol lo he cambiado a "SAP Message ID".