REST API Update: Rejecting qty amend up on already filled GTC/DAY orders

On 28 September 2023 we are making a mandatory change to our REST API.

The exchange will reject any request foramend qty upon an already filled GTC/DAY order with the text“Invalid orderID”

The change is already accessible in Testnet and will be live in Production from 28 September 2023, at 04:00 UTC.

For more details on the change please read this announcement: https://blog.bitmex.com/api_announcement/api-update-rejecting-qty-amend-up-on-already-filled-orders/