<div class="content" name="ClearElementSchema" uuid="bab3821e-d86f-4f30-a649-2b525035ceb8"><p>The ClearElementSchema method is received by the server in
an RPC_REQUEST packet. In response, the server returns the <a href="a988c2d4-10e6-4e2f-8b6f-5cccff12298f" data-linktype="relative-path">IAppHostElementSchema</a> that
represents the schema and constraints of an optionally supported
&#34;directive IAppHostElement&#34;. This directive element can be used by
the administration system to control behavior of the specific <a href="5b32b6df-8364-4ba9-8d04-bfe0a4891a57" data-linktype="relative-path">IAppHostElementCollection</a>
from which the specified <a href="9b7dbefe-84a8-418d-a9c2-4c00d9552a03" data-linktype="relative-path">IAppHostCollectionSchema</a>
was retrieved.</p><dl>
<dd>
<div><pre> [propget] HRESULT ClearElementSchema(
   [out, retval] IAppHostElementSchema** ppSchema
 );
</pre></div>
</dd></dl><p><b>ppSchema: </b>Returns an IAppHostElementSchema
object that is associated with the optionally supported directive <a href="59774887-09e3-4de5-ad8e-4794f404b123" data-linktype="relative-path">IAppHostElement</a>.</p><p><b>Return Values: </b>The server MUST return zero if
it successfully processes the message that is received from the client. If
processing fails, the server MUST return a nonzero <a href="../ms-dtyp/a9046ed2-bfb2-4d56-a719-2824afce59ac" data-linktype="relative-path">HRESULT</a>
code as defined in <a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a>.
The following table describes the error conditions that MUST be handled and the
corresponding error codes. A server MAY return additional
implementation-specific error codes.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>0X00000000 NO_ERROR</td>
  <td>The operation completed successfully.</td>
 </tr><tr>
  <td>0X80070057 ERROR_INVALID_PARAMETER</td>
  <td>One or more parameters are incorrect or null.</td>
 </tr></tbody></table>
</dd></dl><p> </p></div>