> For the complete documentation index, see [llms.txt](https://docs.ndax.in/v3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ndax.in/v3/fix/administrative-message/sequencereset-35-4.md).

# SequenceReset (35=4)

`SequenceReset (35=4)` message can be used for both Gap Fill or to reset sequence numbers.

<table><thead><tr><th width="83">Tag</th><th width="123">Field Name</th><th width="109">Data Type</th><th width="75">Req’d</th><th>Description</th></tr></thead><tbody><tr><td>36</td><td>NewSeqNo</td><td>SeqNum</td><td>Y</td><td>New sequence number. The number cannot be lower than the expected sequence number of either side of the connection.</td></tr><tr><td>123</td><td>GapFillFlag</td><td>Boolean</td><td>N</td><td>Indicates the sequence reset message is replacing messages which will not be resent.<br>Supported values:<br><code>Y</code> = Gap Fill message, <code>MsgSeqNum (34)</code> is valid<br><code>N</code> = Sequence Reset, ignore <code>MsgSeqNum (34)</code></td></tr></tbody></table>