<div class="content"><p>The <b>GetFunctionalLevel</b> method SHOULD<a id="Appendix_A_Target_33"></a><a aria-label="Product behavior note 33" href="6ea29e14-9c33-4927-90a8-258fd1d6d042#Appendix_A_33" data-linktype="relative-path">&lt;33&gt;</a> return the maximum functional
level of the cluster supported by this server.</p><dl>
<dd>
<div><pre>    HRESULT GetFunctionalLevel(
      [out] WORD* FunctionalLevel
    );
</pre></div>
</dd></dl><p><b>FunctionalLevel:</b> The cluster functional level.</p><p><b>Return Values:</b> A signed 32-bit value that
indicates the return status. If the method returns a negative value, it has
failed. Zero or positive values indicate success, with the lower 16 bits in
positive nonzero values containing warnings or flags defined in the method
implementation. For more information about Win32 error codes and HRESULT
values, see <a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a>
section <a href="../ms-erref/0642cb2f-2075-4469-918c-4441e69c548a" data-linktype="relative-path">2.1</a>
and section <a href="../ms-erref/18d8fbe8-a967-4f1c-ae50-99ca8e491d2d" data-linktype="relative-path">2.2</a>.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>0x00000000</p>
  <p>S_OK</p>
  </td>
  <td>
  <p>The call was successful.</p>
  </td>
 </tr></tbody></table>
</dd>
<dd>
<p>For any other condition, this method MUST return a
value that is not one of the values listed in the preceding table. The client
MUST behave in one consistent, identical manner for all values that are not
listed in the preceding table.</p>
</dd></dl><p>Exceptions Thrown: No exceptions are thrown beyond those
thrown by the underlying <a href="b30bcd1c-8ff6-46d2-a27e-61bd85ace9f4#gt_8a7f6700-8311-45bc-af10-82e10accd331" data-linktype="relative-path">RPC</a>
protocol <a href="../ms-rpce/290c38b1-92fe-4229-91e6-4fc376610c15" data-linktype="relative-path">[MS-RPCE]</a>.</p><p>The opnum field value for this method is 6.</p><p>When processing this call, the server MUST retrieve the
cluster functional level using an implementation-specific method.</p><p>The server MUST return the cluster functional level to the
client.</p></div>