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# Market Data Availability

The field may contain three chars.

First character defines market data timeline. This includes:  R = RealTime, D = Delayed, Z = Frozen, Y = Frozen Delayed, N = Not Subscribed.

Second character defines the data structure. This includes: P = Snapshot, p = Consolidated.

Third character defines the type of data: This will always return: B = Book

| Code | Name                                       | Description                                                                                                                                                                                                                                                                                                                             |
| ---- | ------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| R    | RealTime                                   | Data is relayed back in real time without delay, market data subscription(s) are required.                                                                                                                                                                                                                                              |
| D    | Delayed                                    | Data is relayed back 15-20 min delayed.                                                                                                                                                                                                                                                                                                 |
| Z    | Frozen                                     | Last recorded data at market close, relayed back in real time.                                                                                                                                                                                                                                                                          |
| Y    | Frozen Delayed                             | Last recorded data at market close, relayed back delayed.                                                                                                                                                                                                                                                                               |
| N    | Not Subscribed                             | User does not have the required market data subscription(s) to relay back either real time or delayed data.                                                                                                                                                                                                                             |
| O    | Incomplete Market Data API Acknowledgement | The annual Market Data API Acknowledgement has not been completed for the given user. To complete the agreement:  1. Log in to the 2. Select "Welcome" in the top right corner, and then "Settings" 3. You will find a large button for "Market Data Subscriptions" on the right. 4. Find the "Market Data API Agreement" on the right. |
| P    | Snapshot                                   | Snapshot request is available for contract.                                                                                                                                                                                                                                                                                             |
| p    | Consolidated                               | Market data is aggregated across multiple exchanges or venues.                                                                                                                                                                                                                                                                          |
| B    | Book                                       | Top of the book data is available for contract.                                                                                                                                                                                                                                                                                         |
| d    | Performance Details Enabled                | Additional performance details are available for this contract. Internal use intended.                                                                                                                                                                                                                                                  |