API ReferenceTradingOrder ManagementOrder Management Modify or cancel open orders, one at a time or in bulk, with sync or async endpoints. EndpointMethodDescriptionSync—Modify or cancel orders, one at a time or in bulk, and get the exchange result in the response.Async—Modify or cancel orders through a queue processed at up to 10 orders per second. The response returns id_fyers.Last updated on October 14, 2026Smart Order BookSync