> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kraken.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sequence Reset

> FIX message used to reset sequence numbering or indicate that a range of sequence numbers will not be transmitted.

The Sequence Reset message is used to reset the sequence numbering or to indicate that a range of sequence numbers will not be transmitted. It can be used as a Gap Fill to indicate that no messages were sent in a range of sequence numbers, or as a Sequence Reset to reset the sequence number to a new value.

<Tabs>
  <Tab title="FIX Specification">
    <ParamField path="header" type="" required>
      MsgType <code>4</code>
    </ParamField>

    <ParamField path="123 - GapFillFlag" type="boolean">
      Indicates whether this is a gap fill message.

      <ul>
        <b>Possible values: </b>
        <li><code>Y</code> : Gap Fill - indicates no messages were sent in a range of sequence numbers</li>
        <li><code>N</code> or not present : Sequence Reset - resets sequence number to new value</li>
      </ul>
    </ParamField>

    <ParamField path="36 - NewSeqNo" type="integer" required>
      New sequence number for next message.
    </ParamField>

    <ParamField path="trailer" type="" required />
  </Tab>
</Tabs>