| Tag | Field Name | Req'd | Comments |
|---|---|---|---|
| Standard Header | Y | MsgType = j (lowercase) | |
| 45 | RefSeqNum | N | MsgSeqNum of rejected message |
| 372 | RefMsgType | Y | The MsgType of the FIX message being referenced. |
| 379 | BusinessRejectRefID | N | The value of the business-level "ID" field on the message being referenced. Required unless the corresponding ID field (see list above) was not specified. |
| 380 | BusinessRejectReason | Y | Code to identify reason for a Business Message Reject message. |
| 58 | Text | N | Where possible, message to explain reason for rejection |
| 354 | EncodedTextLen | N | Must be set if EncodedText field is specified and must immediately precede it. |
| 355 | EncodedText | N | Encoded (non-ASCII characters) representation of the Text field in the encoded format specified via the MessageEncoding field. |
| Standard Trailer | Y |