| Tag | Field Name | Data Type | Req’d | Description |
|---|---|---|---|---|
| StandardHeader | Y | |||
| 7 | BeginSeqNo | SeqNum | Y | Message sequence number of first message in range to be resent. |
| 16 | EndSeqNo | SeqNum | Y | Message sequence number of last message in range to be resent. |
| 10 | StandardTrailer | Y |