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Keenan WojniczKeenan Wojnicz 

I am receiving an outbound delivery failure, why?

When the outbound message from salesforce is initiated the following error is thrown from Salesforce end.

Delivery Failure Reason: (404)Not Found

In addition in our server log the following error is thrown.
  [nio-8080-exec-9] o.s.ws.server.EndpointNotFound           : No endpoint mapping found for [SaajSoapMessage {http://soap.sforce.com/2005/09/outbound}notifications]

For some background:
We have three endpoints defined in our application, namely for Account, Contact, and Opportunity entities of Salesforce. All three of our servers are having the same namespace and the same notification data type. In order to differentiate the messages we have different tags for <soap:operation soapAction=""/> for each web service in the wsdl.

Our services works fine when tested with a SOAP testing tool, eg: SOAP UI. We have tested for all three entities successfully. The error is only when it is initiated from Salesforce via outbound messages which are fired from a workflow rule.
 
v varaprasadv varaprasad
Hi,

please Check the URL - Make sure that the URL inputted correctly. This includes spelling of the URL, correct slashes, file extension of the page and so forth.

please check once below link may useful..

https://www.prestashop.com/blog/en/404-not-found-error-how-to-fix-it/  
 
Keenan WojniczKeenan Wojnicz
Hi v varaprasad,

I have checked the endpoints I am using and they are functioning correctly. Could there be a different issue causing this to occur?
Panduranga GollaPanduranga Golla
Hi, 

you should check URL of endpoint and username and password properly