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This is a private channel. Authorize the WebSocket connection before subscribing.
Query or subscribe to active (unexecuted) orders across specified markets. Each update includes order ID, type, side, price, amounts, and execution status. Update interval: real-time.
The private stream returns active orders, including orders using Retail Price Improvement (RPI) mode.

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Handling modified (replaced) orders

When you modify an order using the Modify Order REST endpoint, the WebSocket stream emits an update with event ID 2 (Update order). The updated order object reflects the new price, amount, or activation price, while the id and market remain the same. If the modified order is fully filled immediately after modification, you receive a single update with event ID 3 (Finish order) instead. To track modified orders:
  1. Subscribe to ordersPending_subscribe for your markets
  2. Listen for updates with event ID 2 — these indicate the order was modified
  3. Compare mtime (modified time) with ctime (created time) to confirm the order was modified after creation
  4. Use client_order_id to correlate the modified order with your internal records