The DeleteVersion operation deletes a specific version of the specified file. If the Recycle Bin is enabled, the version is placed in the Recycle Bin, instead. This operation MUST NOT grant deletion of the current version or the published version of the file.

 <wsdl:operation name="DeleteVersion">
     <wsdl:input message="tns:DeleteVersionSoapIn" />
     <wsdl:output message="tns:DeleteVersionSoapOut" />

The protocol client sends a DeleteVersionSoapIn request message, and the protocol server responds with a DeleteVersionSoapOut response message.