Cmd: A string that specifies the method name. If the DeleteField method is used, the Cmd parameter MUST be present and have the value "DeleteField".
List: The identifier of the list from which the field is to be deleted. This parameter MUST be a GUID and it MUST be present.
Field: A string that specifies the name of the field to be deleted. This parameter MUST be present.
NextUsing: A string that specifies the server-relative URL to which the protocol client is to be redirected after the method is finished.
owshiddenversion: An integer that specifies the version of the list on which this operation is to be performed. This represents the version of the list.