The MaxElements element is used to limit the number of items retrieved in a single message, as specified in [WSENUM] section 3.2.

Web Services Management Protocol Extensions for Windows Server 2003 servers MUST use the smaller value of the MaxBatchItems configuration setting (defined in section and the value of wsen:MaxElements as the effective value of wsen:MaxElements. The maximum number of items that is returned in a single Pull response message is determined by the smaller of the MaxBatchItems configuration settings on the server and the value of the wsen:MaxElements element in the Pull request message.