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I have generated classes from WSDL file. I'm trying to execute a method from the generated class, there I'm getting the below error.

System.CalloutException: Web service callout failed: Unexpected element. Parser was expecting element 'http://schemas.xmlsoap.org/soap/envelope/:Envelope' but found ':html'

What can I change to avoid the error?

  • You can try to fix your class according to your endpoint specifications – kurunve Jul 20 '17 at 15:45
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    Your server is returning an error page, in HTML. You'll want to use something like SoapUI to diagnose the issue. – sfdcfox Jul 20 '17 at 15:52
  • @sfdcfox OK,I'll check – Rock SFDC Jul 20 '17 at 16:15
  • Another option would be to use Assertible (assertible.com) or Postman (getpostman.com) to debug the issues. Both are free to use and similar to SoapUI, but a little more modern (I am a founder at Assertible. Good luck!). – creichert Jul 20 '17 at 19:40
  • @RockSFDC If you are in a debug org, check for the CALLOUT_REQUEST and CALLOUT_RESPONSE pair in the debug log. You might be able to see the problem response there. – Daniel Ballinger Jul 21 '17 at 3:54
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This occurs when the external service didn't return a SOAP response. In this case, rather than a SOAP envelope element there is an html element at the start of the response.

As @sfdcfox commented, this indicates the service is returning an HTML response. It's likely some sort of error page, security response, or a redirect.

In a Salesforce Debug org you can check the Apex debug log for the CALLOUT_REQUEST and CALLOUT_RESPONSE pair. The latter should show you exactly what is coming back.

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