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.NET Web Services Discussions about .NET XML Web Service technologies including ASMX files, WSDL and SOAP.
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Old December 9th, 2010, 12:48 PM
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Default Please supply a valid soap action

I have sreated a web service (.NET2.0)..works fine internally. Now a client is trying to access it and an error " faultString: Unable to handle request without a valid action parameter. Please supply a valid soap action." shows up.

Some of the artiles hav suggested action=http://tempuri.org/Echo
as a solution for an error "Unable to handle request without a valid action parameter. Please supply a valid soap action".
what is this and how does this solve the problem ? can anyone throw some light.
Also some links suggest to use
httpWebRequest.Headers.Add("SOAPAction", "urn:Example1/HelloWorld")
Where should this be used..in the web service or calling client?How does this help.
I have tried
SoapDocumentService(RoutingStyle = SoapServiceRoutingStyle.RequestElement)]
in the web service and does not seem to help.
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