Skip to content

2026-5-07

2026-05-07

Futures V3 & Testnet — Modify Order Endpoint

  • Added the PUT /fapi/v3/order — Modify Order (TRADE) endpoint to Futures V3 and Futures Testnet (EN & ZH), placed before "Place Multiple Orders":
  • Supports modifying an existing LIMIT order's quantity and price
  • Both quantity and price must be sent in the request
  • Either orderId or origClientOrderId must be provided (orderId takes precedence if both are sent)
  • Modifications that violate PRICE_FILTER / PERCENT_FILTER / LOT_SIZE are rejected and the original order is preserved
  • Maximum 10000 modifications per order

Futures V3 & Testnet — Sub-Account Transfer Updates

  • Updated the Sub-Account Transfer endpoint documentation in Futures V3 and Futures Testnet (EN & ZH):
  • Added a new row to the Transfer Scenarios table: Sub A → Sub B signed with the sub-account's wallet private key (no fromAccountAddress required when the source is the signing sub-account)
  • Updated Important Notes: when signing with a sub-account's private key, both transfers to the master account and Sub→Sub transfers are supported (previously sub→sub had to be signed by the master account)