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Requests a price modification for an existing order.

CLI

price must be a positive decimal string. The order ID must be 1 to 128 characters.

HTTP

The request body requires only price.

Response

Success returns HTTP 202 with the standard envelope. data contains order_id and accepted. accepted: true acknowledges the modification request; it does not mean the order reached its final state. Query Get order afterward. Possible action errors include order_not_found, order_not_modifiable, and broker rejection.