# Singapore Exchange (SGX) Enumerations

The Singapore Exchange is one of the leading securities and derivatives exchanges in Asia-Pacific.

The following fields have Enumerations:

* BOOK_TYPE - Type of order book or trading mechanism through which a trade was executed.
* MKT_PHASE - Indicates the instrument’s current market phase, as specified by the trading venue
* TRADE_PERIOD - Market period during which a trade was executed.
* TRADE_TYPE - Type of trade

#### BOOK_TYPE - Enumeration

|   Enumeration ID | Enumeration Description   |
|------------------|---------------------------|
|                0 | Lit order book            |
|                1 | Off-book                  |
|                3 | Odd lot book              |
|                5 | Buy-in                    |

#### MKT_PHASE - Enumeration

| Enumeration ID         | Enumeration Description                       |
|------------------------|-----------------------------------------------|
| ADJUST                 | Adjustment (re-opening auction)               |
| BI                     | Buy-in only                                   |
| BI_OPEN                | Buy-in open                                   |
| CIRB                   | Circuit breaker cooling-off period            |
| CIRH                   | Circuit breaker halt                          |
| CLOSE                  | Closed                                        |
| ```
| CLOSE_MKT              | Closed                                        |
| DL                     | Delisted                                      |
| H                      | Halted                                        |
| ICT                    | Instrument ceased trading                     |
| J                      | Adjustment (re-opening auction)               |
| MCE                    | Mandatory call event                          |
| MKT_ADJ                | Adjustment (re-opening auction)               |
| MKT_SUSP               | Market halt                                   |
| NON-CANCEL             | Non-cancel (auction uncrossing phase)         |
| NON-CANCEL_LAST        | Non-cancel (closing auction uncrossing phase) |
| OPEN                   | Continuous trading                            |
| PL                     | Pending listing                               |
| PRE-CLOSE              | Closing auction                               |
| PRE-OPEN               | Opening auction                               |
| PRE-OPEN1              | Opening auction                               |
| PRE-OPEN2              | Auction call                                  |
| REMOVE_ORDERS          | Halted, orderbook cleared                     |
| RIO                    | Halted, orderbook cleared                     |
| SOD                    | Start of day                                  |
| SUSP                   | Suspended                                     |
| TRADE_AT_CLOSE         | Trading at closing price                      |

#### TRADE_PERIOD - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| -                | Regular trading           |
| C                | Closing auction           |
| I                | Intraday auction          |
| O                | Opening auction           |
| T                | Trading at closing price  |
| U                | Unscheduled auction       |

#### TRADE_TYPE - Enumeration

| Enumeration ID   | Enumeration Description           |
|------------------|-----------------------------------|
| 0                | Regular trade                     |
| 2                | Unintentional cross               |
| 512              | Regular trade (all or none)       |
| 514              | Unintentional cross (all or none) |
| RT               | Reported trade                    |