The soap envelope is the wrapping element of the whole request document.
The root of the request document is always the SOAP-ENV:Envelope element. The namespace attribute (xmlns=...) must be the same as the one defined in the SOAP Envelope Handler in the XAI Envelope Handler page.
Example for SOAP 1.0
<SOAP-ENV:Envelope xmlns:SOAP-ENV="urn:schemas-xmlsoap-org:envelope">
Example for SOAP 1.1
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
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