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Bettors can request a custom parlay on SX.Bet by selecting multiple markets. When they submit a parlay request, a message is sent via Websocket (See this link for more details on the request). Once this message is sent, makers will be able to submit orders to this market for upto three seconds. Market makers can use the payload data from the Parlay Request to submit an order. Market makers have a three second window to post orders. After this point, bettors will be shown all available orders at the same time and no other orders will be viewable by the bettor. Bettors can choose which order to take, and take it by posting a FOK order like any other non-parlay order. An IOC order on a parlay market is rejected with PARLAY_ORDER_MUST_NOT_BE_IOC. Market makers can cancel orders like any other non-parlay order.
The parlay order-book that is displayed to a bettor will automatically close after one minute. Your orders may still be active even though the order-book window has closed (the user will not be able to view your order after the window closes).
Parlay Orders will expire just as normal orders do, so please set the expiry on your orders accordingly. It must not outlive the parlay’s own expiry, or the order is rejected with PARLAY_ORDER_EXPIRY_BEYOND_PARLAY_EXPIRY.
Parlay Markets act as regular markets, but with additional fields to indicate the underlying legs that make up the Parlay.
Last modified on August 11, 2026