| Tag | Field Name | Data Type | Req’d | Description |
|---|---|---|---|---|
| 36 | NewSeqNo | SeqNum | Y | New sequence number. The number cannot be lower than the expected sequence number of either side of the connection. |
| 123 | GapFillFlag | Boolean | N | Indicates the sequence reset message is replacing messages which will not be resent. Supported values: Y = Gap Fill message, MsgSeqNum (34) is valid, N = Sequence Reset, ignore MsgSeqNum (34) |