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Web Service Operation invocation fails

There can be multiple reasons for that:

Symptom 1

  1. View the defaultTrace
  2. If the following exceptions appear, there is a problem in the request (parameters sent to server):
  • XmlMarshalException
  • XML Serialization Error

A mandatory parameter may be missing, or, a parameter may not fulfill schema restrictions (e.g. length, min/max values etc)

Solution
Add the missing parameter, or, set its value to fulfill the restrictions

Symptom 2

  1. View the defaultTrace
  2. If the following exceptions appear, there is a problem in the response (sent by the server):
  • XmlUnmarshalException
  • XML Deserialization Error

Within service response, a mandatory parameter might be missing, or, a parameter might not fulfill schema restrictions (e.g. length, min/max values etc)

Solution
Contact the web service provider to fix the server side.

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