> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cdp.coinbase.com/llms.txt
> Use this file to discover all available pages before exploring further.
# INTX FIX Market Data Messages
## SecurityListRequest (35=x)
Submits a request to get a list of the securities available to trade on the exchange.
| Tag | Name | Type | Required | Description |
| :-- | :---------------------- | :----- | :------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 320 | SecurityReqID | string | Y | Unique identifier for the security request used to correlate the response to the request. |
| 559 | SecurityListRequestType | string | Y | Specifies the scope of the security request.
Supported values include:
0 = Symbol
4 = All Securities |
| 55 | Symbol | string | C | Required when SecurityListRequestType (tag 559) is set to Symbol (0). The SecurityList response will only include results matching the symbol specified in this field. |
## SecurityList (35=y)
A response to a SecurityListRequest that includes information about the requested securities.
| Tag | Name | Type | Required | Description | |
| :----------------- | :---------------------- | :------------ | :------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | - |
| 320 | SecurityReqID | string | Y | The SecurityReqID of the SecurityListRequest that this message is in response to | |
| 322 | SecurityResponseID | string | Y | A unique response ID | |
| 560 | SecurityRequestResult | string | Y | 0 = Valid request
1 = Invalid or unsupported request
2 = No instruments found that match selection criteria
4 = Instrument data temporarily unavailable | |
| 393 | TotNoRelatedSym | int | Y | Used to indicate the total number of securities being returned for this request. Used in the event that message fragmentation is required. | |
| 893 | LastFragment | char | N | N = Not Last message
Y = Last Message for SecurityListRequest | |
| 146 | NoRelatedSym | int | Y | When >0 a repeating group of instrument definitions follows. | |
| → 55
| Symbol | string | Y | The symbol used to represent the instrument. | |
| → 167
| SecurityType | string | Y | Identifies the type of instrument. Values include:
FXSPOT = Spot pairs
PERP = Perpetual futures | |
| → 762
| SecuritySubType | string | Y | Identifies the mode of instrument. Values include:
STANDARD = Standard instrument mode
PRE\_LAUNCH = Pre-launch mode
PRE\_LAUNCH\_CONVERTING = Converting from pre-launch mode to standard mode | |
| → 231
| ContractMultiplier | decimal | N | Specifies the multiply factor to indicate the number of units in one contract. | |
| → 969
| MinPriceIncrement | decimal | Y | The tick size of the instrument. | |
| → 898
| MarginRatio | decimal | Y | The base initial margin requirement. | |
| → 21000
| DefaultMarginRatio | decimal | N | The default initial margin requirement. | |
| → 870
| NoInstrAttrib | int | Y | Marks the beginning of the Instrument Attributes repeating group component. | |
| →→ 871
| InstrAttribType | int | Y | Identifies the type of instrument attribute the InstrAttribValue (872) represents.
Supported values include:
40 = Average daily notional amount
41 = Average daily trade quantity
42 = Total day notional amount (30 days)
43 = Total day trade quantity (30 days)
44 = Total hour notional amount (24 hours)
45 = Total hour trade quantity (24 hours)
Average daily notional amount (40), Total day notional amount (30 days) (42), Total hour notional amount (24 hours) (44) are not sent for spot instruments which route orders to Coinbase Exchange. | |
| →→ 872
| InstrAttribValue | string | Y | The value corresponding to the InstrAttribType (871). | |
| → 864
| NoEvents | int | N | Marks the beginning of the Events repeating group component. | |
| →→ 865
| EventType | int | N | Identifies the event represented by EventTime (1145).
Supported values include:
101 = Pre-launch conversion time
| |
| →→ 1145
| EventTime | utc timestamp | N | The timestamp corresponding to the EventType (865). | |
| → 15
| Currency | string | Y | Currency used for price. | |
| → 562
| MinTradeVol | decimal | Y | The minimum quantity in terms of USDC notional value accepted for an order. | |
| → 1140
| MaxTradeVol | decimal | N | The maximum quantity allowed for position size. (Will be deprecated in a future release) | |
| → 970
| PositionLimit | decimal | N | The maximum notional value allowed for position. | |
| → 561
| RoundLot | decimal | Y | The maximum precision allowed when specifying a quantity. | |
| → 1682
| MDSecurityTradingStatus | int | N | Identifies the status of the market. Values include:
2 = Halt
4 = Close
15 = New price indication
17 = Ready to trade
18 = Not available for trading
19 = Not Traded On This Market
20 = Unknown or invalid
21 = Pre-open
24 = Pre-cross
25 = Cross
26 = Post-close
27 = Pre-open no cancel
99 = Pause
100 = Auction Mode
101 = Cancel Only
102 = Post Only
103 = Limit Only
104 = Trading Disabled
105 = Cancel Only Enforced By Coinbase International Exchange
106 = Coinbase Exchange Unreachable
During Halt (2), limit orders can be submitted or canceled, but will not match. When moving from Halt (2) to Ready to trade (17) all buy orders above and all sell orders below a communicated target price get canceled before matching resumes. During Ready to trade (17), all supported order types are accepted and continuous matching occurs. During Pause (99), orders can only be canceled. When moving from Pause (99) to Ready to trade (17), crossed orders fill at the last Opening price (sent as MDEntryType Opening price (269=4) in MarketDataSnapshotFullRefresh (35=W) and MarketDataIncrementalRefresh (35=X)) During Not Traded On This Market (19), orders will not be accepted but liquidation execution reports may reference this symbol Auction Mode (100), Cancel Only (101), Post Only (102), Limit Only (103), Trading Disabled (104) are forwarded From Coinbase Exchange for spot instruments which route orders to Coinbase Exchange. Cancel Only Enforced By Coinbase International Exchange (105) means Coinbase International Exchange only permits order cancellation separately from Coinbase Exchange Coinbase Exchange Unreachable (106) means the Coinbase International Exchange component is unable to establish connectivity with Coinbase Exchange | |
| 711 | NoUnderlyings | int | N | Number of underlyings | |
| → 310
| UnderlyingSecurityType | string | N | Underlying security's SecurityType.
Possible values are:
INDEX = Underlying is an index
FXSPOT = Underlying is a spot pair
EQUITY = Contract based on equity single stock
EQUITY\_ETF = Contract based on equity ETF
EQUITY\_INDEX = Contract based on equity custom basket or index
COMMOD = Contract based on commodity
COMMOD\_INDEX = Contract based on commodity index
COMMOD\_ETF = Contract based on commodity ETF
PREIPO = Contract based on pre-IPO equity | |
## SecurityDefinition (35=d)
Sent when a new security becomes available for trading or something changes with an existing security.
| Tag | Name | Type | Required | Description |
| :---------------- | :---------------------- | :------------ | :------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 980 | SecurityUpdateAction | char | Y | Indicates whether the message is adding, modifying, or deleting a instrument.
Values include:
A = Add
M = Modify
D = Delete |
| 779 | LastUpdateTime | utc timestamp | Y | Timestamp of the last update or creation if no updates have occurred yet. |
| 55 | Symbol | string | Y | The symbol used to represent the instrument. |
| 167 | SecurityType | string | Y | Identifies the type of instrument. Values include:
FXSPOT = Spot pairs
PERP = Perpetual futures |
| 762 | SecuritySubType | string | Y | Identifies the mode of instrument. Values include:
STANDARD = Standard instrument mode
PRE\_LAUNCH = Pre-launch mode
PRE\_LAUNCH\_CONVERTING = Converting from pre-launch mode to standard mode |
| 231 | ContractMultiplier | decimal | N | Specifies the multiply factor to indicate the number of units in one contract. |
| 969 | MinPriceIncrement | decimal | Y | The tick size of the instrument. |
| 898 | MarginRatio | decimal | Y | The base initial margin requirement. |
| 21000 | DefaultMarginRatio | decimal | N | The default initial margin requirement. |
| 870 | NoInstrAttrib | int | Y | Marks the beginning of the Instrument Attributes repeating group component. |
| → 871
| InstrAttribType | int | Y | Identifies the type of instrument attribute the InstrAttribValue (872) represents.
Supported values include:
40 = Average daily notional amount
41 = Average daily trade quantity
42 = Total day notional amount (30 days)
43 = Total day trade quantity (30 days)
44 = Total hour notional amount (24 hours)
45 = Total hour trade quantity (24 hours)
Average daily notional amount (40), Total day notional amount (30 days) (42), Total hour notional amount (24 hours) (44) are not sent for spot instruments which route orders to Coinbase Exchange. |
| → 872
| InstrAttribValue | string | Y | The value corresponding to the InstrAttribType (871). |
| 864 | NoEvents | int | N | Marks the beginning of the Events repeating group component. |
| → 865
| EventType | int | N | Identifies the event represented by EventTime (1145).
Supported values include:
101 = Pre-launch conversion time
|
| → 1145
| EventTime | utc timestamp | N | The timestamp corresponding to the EventType (865). |
| 15 | Currency | string | Y | Currency used for price. |
| 562 | MinTradeVol | decimal | Y | The minimum quantity in terms of USDC notional value accepted for an order. |
| 1140 | MaxTradeVol | decimal | N | The maximum quantity allowed for position size. (Will be deprecated in a future release) |
| 970 | PositionLimit | decimal | N | The maximum notional value allowed for position. |
| 561 | RoundLot | decimal | Y | The maximum precision allowed when specifying a quantity. |
| 1682 | MDSecurityTradingStatus | int | N | Identifies the status of the market. Values include:
2 = Halt
4 = Close
15 = New price indication
17 = Ready to trade
18 = Not available for trading
19 = Not Traded On This Market
20 = Unknown or invalid
21 = Pre-open
24 = Pre-cross
25 = Cross
26 = Post-close
27 = Pre-open no cancel
99 = Pause
100 = Auction Mode
101 = Cancel Only
102 = Post Only
103 = Limit Only
104 = Trading Disabled
105 = Cancel Only Enforced By Coinbase International Exchange
106 = Coinbase Exchange Unreachable
During Halt (2), limit orders can be submitted or canceled, but will not match. When moving from Halt (2) to Ready to trade (17) all buy orders above and all sell orders below a communicated target price get canceled before matching resumes. During Ready to trade (17), all supported order types are accepted and continuous matching occurs. During Pause (99), orders can only be canceled. When moving from Pause (99) to Ready to trade (17), crossed orders fill at the last Opening price (sent as MDEntryType Opening price (269=4) in MarketDataSnapshotFullRefresh (35=W) and MarketDataIncrementalRefresh (35=X)) During Not Traded On This Market (19), orders will not be accepted but liquidation execution reports may reference this symbol Auction Mode (100), Cancel Only (101), Post Only (102), Limit Only (103), Trading Disabled (104) are forwarded From Coinbase Exchange for spot instruments which route orders to Coinbase Exchange. Cancel Only Enforced By Coinbase International Exchange (105) means Coinbase International Exchange only permits order cancellation separately from Coinbase Exchange Coinbase Exchange Unreachable (106) means the Coinbase International Exchange component is unable to establish connectivity with Coinbase Exchange |
| 711 | NoUnderlyings | int | N | Number of underlyings |
| → 310
| UnderlyingSecurityType | string | N | Underlying security's SecurityType.
Possible values are:
INDEX = Underlying is an index
FXSPOT = Underlying is a spot pair
EQUITY = Contract based on equity single stock
EQUITY\_ETF = Contract based on equity ETF
EQUITY\_INDEX = Contract based on equity custom basket or index
COMMOD = Contract based on commodity
COMMOD\_INDEX = Contract based on commodity index
COMMOD\_ETF = Contract based on commodity ETF
PREIPO = Contract based on pre-IPO equity |
## MarketDataRequest (35=V)
Sent by the client to subscribe or unsubscribe to market data for a given security. The market data feed only supports aggregated books on levels 1, 10, or 20 (e.g., 266=Y and 264 = 10).
| Tag | Name | Type | Required | Description |
| :--------------- | :---------------------- | :----- | :------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 262 | MDReqID | string | Y | A unique ID assigned by the client that is referenced on market data message relating to this request on in the following messages:
MarketDataRequestReject (35=Y)
MarketDataSnapshotFullRefresh (35=W)
MarketDataIncrementalRefresh (35=X)
And also used for a followup MarketDataRequest to unsubscribe (i.e. 263=2). |
| 263 | SubscriptionRequestType | char | Y | Type of subscription request:
1 = Subscribe (snapshots + updates)
2 = Unsubscribe |
| 264 | MarketDepth | int | C | How many price levels from BBO inclusive to include for the market data snapshot and updates (defaults to 1). Limited to 1,10, or 20 levels and does not support full book depth. |
| 146 | NoRelatedSym | int | N | The number of symbols in the repeating group defined below. If unspecified or set to 0 the request applies to all symbols. |
| → 55
| Symbol | string | C | The symbol used to represent the instrument. Required if NoRelatedSym > 0. |
| → 167
| SecurityType | string | C | Identifies the type of instrument. Values include:
FXSPOT = Spot pairs
PERP = Perpetual futures
Required if NoRelatedSym > 0. |
## MarketDataRequestReject (35=Y)
Sent by the exchange a MarketDataRequest fails.
| Tag | Name | Type | Required | Description |
| :-- | :------------- | :----- | :------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 262 | MDReqID | string | Y | The same value provided for the MDReqID on the MarketDataRequest message. |
| 281 | MDReqRejReason | int | Y | A numerical reject code for common rejects to explain why the MarketDataRequest was rejected:
0 = Unknown symbol
1 = Duplicate MDReqID
5 = Unsupported market depth
7 = Other |
| 58 | Text | string | N | |
## MarketDataSnapshotFullRefresh (35=W)
Sent in response to a MarketDataRequest. This message can contain a 2 sided list of quotes for a single security. It is used to initialize or reset the entire state of the book.
| Tag | Name | Type | Required | Description |
| :---------------- | :----------- | :------------ | :------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 262 | MDReqID | string | Y | The same value provided for the MDReqID on the MarketDataRequest message. |
| 55 | Symbol | string | Y | The symbol used to represent the instrument. |
| 167 | SecurityType | string | Y | Identifies the type of instrument. Values include:
FXSPOT = Spot pairs
PERP = Perpetual futures |
| 268 | NoMDEntries | int | Y | Marks the beginning of a repeating group for market data entries while also indicating the number of market data entries in the group. Value must be > 0. |
| → 269
| MDEntryType | char | Y | Indicates the type of MD entry, values include:
0 = Bid
1 = Offer
2 = Trade
3 = Index price
4 = Opening price
6 = Settlement price
B = Trade quantity
g = Fair value limit up
h = Fair value limit down
f = Final funding rate
m = Mark price
p = Predicted funding rate
C = Open interest
- Bid indicates the aggregated quantity interested in buying that is resting on the book at a specific price point.
- Offer indicates the aggregated quantity interested in selling that is resting on the book at a specific price point.
- Trade indicates the size and price of the most recent trade.
- Index price is a calculated price based away market quotes used to determine funding for perpetual futures and calculate the fair value.
- Opening price indicates the probable price at which the market will open and is only populated when the market is in the Halt or Pause statuses.
- Settlement price indicates the price used to settle open positions which resets risk calculations for margin and unrealized P\&L.
- Trade quantity discloses how much of the instrument (in base asset/size terms) traded over the last 24 hours.
- Fair value limit up represents the max price the market can trade at.
- Fair value limit down represents the min price the market can trade at.
- Final funding rate indicates the funding rate used to keep perpetual futures assets pegged to the index price.
- Mark price is the median of the best bid, best offer, and last trade which gets used in various risk calculations.
- Predicted funding rate gives the most recent rolling calculation update of the funding rate prior to completing a funding period for perpetual futures.
- Open interest gives the total number of active positions held by traders.
|
| → 278
| MDEntryID | long | C | A unique identifier used to reference the entry, only used for trades. |
| → 270
| MDEntryPx | decimal | C | The price of the MD entry. |
| → 271
| MDEntrySize | decimal | C | The size of the MD entry.
Not required when the MDUpdateAction (279) is a delete (2) or the MDEntryType (269) is index price (3), Settlement price (6), Fair value limit up (g), Fair value limit down (h), Final funding rate (f), Mark price (m), or Predicted funding rate (p). |
| → 60
| TransactTime | utc timestamp | Y | The timestamp representing when the MD entry was generated. |
| → 1023
| MDPriceLevel | int | C | Indicates the level of price from the BBO with the BBO price as level 1.
Not required when the MDUpdateAction (279) is a delete (2) or the MDEntryType (269) is index price (3), Settlement price (6), Fair value limit up (g), Fair value limit down (h), Final funding rate (f), Mark price (m), or Predicted funding rate (p). |
## MarketDataIncrementalRefresh (35=X)
Sent in response to a MarketDataRequest. This message provides incremental updates for quote changes in a single security.
| Tag | Name | Type | Required | Description |
| :---------------- | :------------- | :------------ | :------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 262 | MDReqID | string | Y | The same value provided for the MDReqID on the MarketDataRequest message. |
| 893 | LastFragment | boolean | N | Permits clients to process multi-level book (`MDEntryType (269)` of `Bid (0)` or `Offer (1)`) batch fragments atomically. Either set to `YES/Y` (to denote the last fragment of a batch for an instrument) or not populated (to note this fragment is not the last).
Multi-level book updates are batched per instrument, meaning the exchange queues individual price level updates and sends all queued updates together for each instrument on a regular time interval. To limit the size of the `MarketDataIncrementRefresh` message for each batch, a batch may be fragmented into multiple `MarketDataIncrementalRefresh` messages. Clients have the option of either: - Processing each batch fragment immediately, or
- Queuing batch fragments until the last fragment is received to process the entire batch at once.
Clients using option 1 can ignore this field. Clients using option 2 should queue all book updates from `MarketDataIncrementalRefresh` messages without `LastFragment` populated until receiving a `MarketDataIncrementalRefresh` with `LastFragment` set to `YES/Y`, at which point they can queue the included updates and process all queued updates for the instrument the included updates correspond to at once. |
| 268 | NoMDEntries | int | Y | Marks the beginning of a repeating group for market data entries while also indicating the number of market data entries in the group. Value must be > 0. |
| → 279
| MDUpdateAction | char | Y | Indicates the type of update, supported values include:
0 = New
1 = Change
2 = Delete |
| → 269
| MDEntryType | char | C | Indicates the type of MD entry, values include:
0 = Bid
1 = Offer
2 = Trade
3 = Index price
4 = Opening price
6 = Settlement price
B = Trade quantity
g = Fair value limit up
h = Fair value limit down
f = Final funding rate
m = Mark price
p = Predicted funding rate
C = Open interest
- Bid (0) and Offer (1) get disseminated when orders prices within a visible BBO level post to the book, get canceled, or trade.
- Trade (2) only gets disseminated for trade events once per trade pair (i.e. the matching portions of a buy and sell generates a single trade message).
- Index (3) price gets disseminated when calculated (typically 1 second).
- Opening price (4) indicates the probable price at which the market will open and is only populated when the market is in the Halt or Pause statuses.
- Settlement price (6) gets disseminated per settlement event (typically 5 minutes).
- Trade quantity (B) gets disseminated daily around 12am UTC.
- The Fair value limit up (g) and Fair value limit down (h) get disseminated when updated (no more frequently than once a second).
- The Final funding rate (f) gets disseminated at the end of the funding interval (hourly).
- The Mark price (m) gets disseminated no more than once per second.
- The Predicted funding rate (p) gets disseminated no more than once a second.
- The Open interest (C) gets disseminated no more than once a second.
|
| → 278
| MDEntryID | long | C | A unique identifier used to reference the entry, set to the match ID when MdEntryType (269) has value trade (2) |
| → 55
| Symbol | string | Y | The symbol used to represent the instrument. |
| → 270
| MDEntryPx | decimal | C | The price of the MD entry. |
| → 271
| MDEntrySize | decimal | C | The size of the MD entry.
Only required when MDEntryType (269) is Bid (0) or Offer (1) while MDUpdateAction (279) is a New (0) or Change (1). |
| → 273
| MDEntryTime | utc timestamp | N | Only set when `MDEntryType (269)` is `Bid (0)` or `Offer (0)`. The timestamp when the order event which resulted in the price level update was processed. Clients with multiple connections may use this field to determine which connection received the latest update for a price level. |
| → 60
| TransactTime | utc timestamp | Y | The timestamp representing when the MD entry was generated. |
| → 1023
| MDPriceLevel | int | C | Indicates the level of price from the BBO with the BBO price as level 1.
Only required when MDEntryType (269) is Bid (0) or Offer (1) while MDUpdateAction (279) is a New (0) or Change (1). |
| → 2446
| AggressorSide | int | C | Indicates what side was the aggressor causing the match to occur. May not get set in certain future contexts like an opening auction.
Values include:
0 = No aggressor
1 = Buy
2 = Sell |
## BusinessMessageReject (35=j)
Sent by the exchange when an application-level message cannot be processed.
| Tag | Name | Type | Required | Description |
| :-- | :------------------- | :----- | :------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 45 | RefSeqNum | int | N | The MsgSeqNum of the message that caused this reject. |
| 372 | RefMsgType | string | Y | The MsgType of the message that caused this reject. |
| 379 | BusinessRejectRefID | string | N | An identifier pointing to the message referenced for this reject. |
| 380 | BusinessRejectReason | int | Y | A code to quickly identify common reasons for a reject.
Values could include:
0 = Other
1 = Unknown ID
2 = Unknown security
3 = Unsupported message type
4 = Application not available
5 = Conditionally required field missing
6 = Not authorized
7 = DeliverTo firm not available at this time |
| 58 | Text | string | N | A message explaining why the message was rejected. |