| Tag | Field Name | Req'd | Comments | |
|---|---|---|---|---|
| Standard Header | Y | MsgType = d (lowercase) | ||
| 320 | SecurityReqID | Y | ||
| 322 | SecurityResponseID | Y | Identifier for the Security Definition message | |
| 323 | SecurityResponseType | Y | Response to the Security Definition Request | |
| Component block <Instrument> | N | Insert here the set of "Instrument" (symbology) fields defined in "COMMON COMPONENTS OF APPLICATION MESSAGES" of the requested Security | ||
| 15 | Currency | N | ||
| 336 | TradingSessionID | N | ||
| 625 | TradingSessionSubID | N | ||
| 58 | Text | N | Comment, instructions, or other identifying information. | |
| 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. | |
| 555 | NoLegs | N | Number of legs that make up the Security | |
![]() | component block <InstrumentLeg> | N | Insert here the set of "InstrumentLeg" (leg-specific symbology) fields defined in "COMMON COMPONENTS OF APPLICATION MESSAGES" | |
![]() | 556 | LegCurrency | N | |
| 561 | RoundLot | N | ||
| 562 | MinTradeVol | N | ||
| Standard Trailer | Y | |||