# Market Data Request <V>

#

Subscribes the current session to a [Market Data - Snapshot/Full Refresh `<W>`](https://www.onixs.biz/fix-dictionary/4.4/msgType_W_87.html) followed by zero or more [Market Data - Incremental Refresh `<X>`](https://www.onixs.biz/fix-dictionary/4.4/msgType_X_88.html) messages.

See [Examples: Market Data Requests](/trading/fix/market-data/examples/market-data-requests) for sample requests and responses.

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### Fields

| Tag   | Name                                                                                | Req | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| ----- | ----------------------------------------------------------------------------------- | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|       | [Standard Header](/trading/fix/overview/standard-header)                                    | Y   | [MsgType](https://www.onixs.biz/fix-dictionary/4.4/msgs_by_msg_type.html) = `V`                                                                                                                                                                                                                                                                                                                                                                                      |
| 262   | [MDReqID](https://www.onixs.biz/fix-dictionary/4.4/tagNum_262.html)                 | Y   | Unique identifier of the market data request. Uniqueness must be guaranteed by the institution for the duration of the connection to the market data channel.                                                                                                                                                                                                                                                                                                        |
| 263   | [SubscriptionRequestType](https://www.onixs.biz/fix-dictionary/4.2/tagNum_263.html) | Y   | Indicates what type of response is expected.<br /><br />Valid values:<br />`1 = Snapshot + Updates (Subscribe)`                                                                                                                                                                                                                                                                                                                                                      |
| 264   | [MarketDepth](https://www.onixs.biz/fix-dictionary/4.4/tagNum_264.html)             | Y   | Depth of the book to receive snapshot and updates for.<br /><br />Valid values:<br />`0 = Full Book`<br />`1 = Top of Book`                                                                                                                                                                                                                                                                                                                                          |
| 267   | [NoMDEntryTypes](https://www.onixs.biz/fix-dictionary/4.4/tagNum_267.html)          | Y   | Number of [MDEntryType `<269>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_269.html) fields requested.                                                                                                                                                                                                                                                                                                                                                          |
| ⇒ 269 | [MDEntryType](https://www.onixs.biz/fix-dictionary/4.4/tagNum_269.html)             | Y   | Type of market data entry to receive snapshots and updates for.<br /><br />Valid values:<br />`0 = Bid`<br />`1 = Offer`<br />`2 = Trade`<br />`R = MarkPrice`<br />`S = FundingAmount`                                                                                                                                                                                                                                                                              |
| 146   | [NoRelatedSym](https://www.onixs.biz/fix-dictionary/4.4/tagNum_146.html)            | Y   | Number of symbols requested.                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| ⇒ 55  | [Symbol](https://www.onixs.biz/fix-dictionary/4.4/tagNum_55.html)                   | Y   | Market data symbol requested.<br /><br />See [Symbol List `<y>`](/trading/fix/market-data/client-bound-messages/symbol-list) for a list of supported symbols.                                                                                                                                                                                                                                                                                                                |
| 9003  | [EnableMDEntryMakerSide](/trading/fix/overview/dictionary/custom-tags)                      | N   | Optional custom field to enable showing [MDEntryMakerSide `<9002>`](/trading/fix/overview/dictionary/custom-tags) in [Market Data – Incremental Refresh](/trading/fix/market-data/client-bound-messages/market-data-incremental-refresh) messages when [MDEntryType `<269>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_269.html) had the value `2 = Trade`.<br /><br />See [Examples: Request to enable maker side on trades](/trading/fix/market-data/examples/market-data-requests). |
| 9009  | [MDEntryFundingIsRealized](/trading/fix/overview/dictionary/custom-tags)                    | N   | Optional custom field used in [Market Data – Incremental Refresh `<X>`](/trading/fix/market-data/client-bound-messages/market-data-incremental-refresh) MDEntry groups when [MDEntryType](https://www.onixs.biz/fix-dictionary/4.4/tagNum_269.html) had the value `S = Funding Amount` to indicate the `IsRealized` field of Funding Amount.                                                                                                                                 |
|       | [Standard Trailer](/trading/fix/overview/standard-trailer)                                  | Y   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |