Used to reset the message sequence number or gap fill
From TT FIX Gateways to a third-party FIX acceptor and then from a third-party FIX acceptor to TT FIX Gateways
| Tag # | Field Name | Req’d | Data type | Comments | |
|---|---|---|---|---|---|
| Component: Standard Header | Y | 35=4 (MsgType) | |||
| 123 | GapFillFlag | N | Boolean |
Indicates that the Sequence Reset message replaces missing administrative or application messages Valid values include:
Default: N |
|
| 36 | NewSeqNo | Y | SeqNum |
New sequence number |
|
| Component: Standard Trailer | Y | ||||
The Sequence Reset (4) message is used to reset the message sequence number when a TT FIX Gateway and a third-party FIX acceptor message sequence numbers do not match. If the message omits Tag 123 (GapFillFlag), the value of Tag 36 (NewSeqNo) indicates the new starting sequence number.
If a third-party FIX acceptor or a TT FIX Gateway needs to skip messages that would be included in a resend request, it sets Tag 123 (GapFillFlag) to Y, and the value of Tag 36 (NewSeqNo) represents the sequence number of the next message to be transmitted.
Note: Non-gap fill resets should be used only to when the sequence number differences cannot be resolved.
For more information about sequence resets and gap fills, refer to the FIX specification.