<div class="content"><p> </p><p>The <b>SubqueueHeader</b> encapsulates information about the
<span><a href="b23ea276-dfad-4083-bc48-d0f8a40255fd#gt_85c78cf0-1fb6-4e5d-85f5-a2e9f58a6b9e" data-linktype="relative-path">message</a></span>
as specified following.<a id="Appendix_A_Target_6"></a><a aria-label="Product behavior note 6" href="4108f68e-80f5-40e1-b3df-b713cc4dff79#Appendix_A_6" data-linktype="relative-path">&lt;6&gt;</a> This header MUST be ignored if
its <b>SubqueueName</b> field is an empty string.</p><table>
 <tbody><tr>
  <th><p><br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
  <th><p><br/>4</p></th>
  <th><p><br/>5</p></th>
  <th><p><br/>6</p></th>
  <th><p><br/>7</p></th>
  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>1<br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
  <th><p><br/>4</p></th>
  <th><p><br/>5</p></th>
  <th><p><br/>6</p></th>
  <th><p><br/>7</p></th>
  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>2<br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
  <th><p><br/>4</p></th>
  <th><p><br/>5</p></th>
  <th><p><br/>6</p></th>
  <th><p><br/>7</p></th>
  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>3<br/>0</p></th>
  <th><p><br/>1</p></th>
 </tr>
 <tr>
  <td colspan="32">
  <p>HeaderSize</p>
  </td>
 </tr>
 <tr>
  <td>
  <p>A</p>
  </td>
  <td colspan="16">
  <p>AcknowledgementClass</p>
  </td>
  <td colspan="15">
  <p>Reserved</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>AbortCounter</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>MoveCounter</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>LastMoveTime</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>SubqueueName
  (64 bytes)</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>TargetSubqueueName
  (64 bytes)</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
</tbody></table><p><b>HeaderSize (4 bytes): </b>A <b>ULONG</b> (<span><a href="../ms-dtyp/cca27429-5689-4a16-b2b4-9325d93e4ba2" data-linktype="relative-path">[MS-DTYP]</a></span>
section <span><a href="../ms-dtyp/32862b84-f6e6-40f9-85ca-c4faf985b822" data-linktype="relative-path">2.2.51</a></span>)
that specifies the size in bytes of the <b>SubqueueHeader</b>.</p><p><b>A - TM (1 bit): </b>A one-<b>bit</b> ([MS-DTYP]
section <span><a href="../ms-dtyp/ece778e5-5d47-451b-bf03-e7ce94fc1fc4" data-linktype="relative-path">2.1.1</a></span>)
flag that MUST be set to 0.</p><p><b>AcknowledgementClass (2 bytes): </b>A <b>USHORT</b>
([MS-DTYP] section <span><a href="../ms-dtyp/c0618c5b-362b-4e06-9cb0-8720d240cf12" data-linktype="relative-path">2.2.58</a></span>)
that MUST specify the acknowledgment class of the message. See <span><a href="../ms-mqqb/85498b96-f2c8-43b3-a108-c9d6269dc4af" data-linktype="relative-path">[MS-MQQB]</a></span>
section <span><a href="../ms-mqmq/bb697835-fe47-4ec3-8457-6c06880a2138" data-linktype="relative-path">2.2.18.1.6</a></span>.</p><p><b>Reserved (15 bits): </b>MUST be ignored.</p><p><b>AbortCounter (4 bytes): </b>A <b>ULONG</b> that
specifies the number of sequentially failed attempts to read the message or to
move the message. See sections <span><a href="c5296e0c-9e12-4fe8-a25d-56924982ac3e" data-linktype="relative-path">3.1.4.13</a></span>, <span><a href="81c28eb5-5658-4089-b8ac-7edc5d629e28" data-linktype="relative-path">3.1.4.10</a></span>,
and <span><a href="73afdc3f-05db-4697-802b-df975efbb8c3" data-linktype="relative-path">3.1.6.1</a></span>.</p><p><b>MoveCounter (4 bytes): </b>A <b>ULONG</b> that
specifies the number of times that the message has been moved. See section
3.1.4.10.</p><p><b>LastMoveTime (4 bytes): </b>A <b>ULONG</b> that
specifies the local time of the most recent move of the message. The time is
specified as the number of milliseconds elapsed since midnight of January 1,
1970. If the message has never been moved, this value is 0x00000000. See
section 3.1.4.10.</p><p><b>SubqueueName (64 bytes): </b>If the message
belongs to a <span><a href="b23ea276-dfad-4083-bc48-d0f8a40255fd#gt_328fe8aa-d006-44dd-8cc8-dba7c862aaf8" data-linktype="relative-path">subqueue</a></span>, the value
MUST contain the null-terminated <span><a href="b23ea276-dfad-4083-bc48-d0f8a40255fd#gt_c305d0ab-8b94-461a-bd76-13b40cb8c4d8" data-linktype="relative-path">Unicode</a></span> string that
specifies the subqueue name. If the subqueue name is shorter than the field
size, the remaining bytes MUST be set to 0x00. If the message does not belong
to the subqueue, all bytes MUST be set to 0x00.</p><p><b>TargetSubqueueName (64 bytes): </b>If the message
is participating in the transacted Move operation that is not yet committed or
aborted, this field MUST contain the null-terminated Unicode string that
specifies the target subqueue name. If the subqueue name is shorter than the
field size, the remaining bytes MUST be set to 0x00. If the message is not part
of a transacted Move operation, all bytes MUST be set to 0x00.</p></div>