Why Can’t the AI Agent Change the Price or Quantity of My Open Order?

Question

Accepted Answer

Open orders cannot be modified through Agentic Trading at all — price, quantity and validity are fixed once the order is placed. The only route is to cancel the order and place a new one. Ask the agent to cancel it, then place a fresh order on the terms you want.

Symptom / ConditionPossible CauseSolution
 You asked the agent to change an open order’s priceOrder modification is not supported at all through the agent channelAsk the agent to cancel the order, then place a new one.
 You asked to change the quantity or the validityThe same limitation applies to every field of an open order, not just priceCancel and re-place with the terms you want.
 The order is an Indonesian stock placed in an earlier conversationCancelling an IDX order needs the reference issued at placement, which only exists in that conversationCancel it in the Pluang app, then place the new order.
 The order has already filledA filled order is a completed transaction — it cannot be changed or cancelledPlace an opposite order if you want to reverse the position.
 You expected cancel-and-re-place to happen in one stepCancel and place are separate actions, each needing its own confirmationConfirm each step; the replacement order gets a fresh quote.

If the issue persists:Contact Pluang Care via live chat in the Pluang app, email tanya@pluang.com, or call (021) 8063 0065 (Monday to Friday, 09:00–18:00 WIB).

Related questions:
Q: Can I change just the validity and leave the price alone?No. No field of an open order can be modified — price, quantity and validity are all fixed once placed.
Q: Does cancelling and re-placing cost me anything?You pay the normal trading fee on whichever order actually executes.
Q: Will the replacement order keep my original place in the queue?No. A replacement is a new order and is treated as one.
Q: Why does the replacement need a new quote?Because the price may have moved. Every order is placed against a fresh quote you confirm, never against an earlier one.

Why Can’t the AI Agent Change the Price or Quantity of My Open Order?

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Symptom / Condition	Possible Cause	Solution
You asked the agent to change an open order’s price	Order modification is not supported at all through the agent channel	Ask the agent to cancel the order, then place a new one.
You asked to change the quantity or the validity	The same limitation applies to every field of an open order, not just price	Cancel and re-place with the terms you want.
The order is an Indonesian stock placed in an earlier conversation	Cancelling an IDX order needs the reference issued at placement, which only exists in that conversation	Cancel it in the Pluang app, then place the new order.
The order has already filled	A filled order is a completed transaction — it cannot be changed or cancelled	Place an opposite order if you want to reverse the position.
You expected cancel-and-re-place to happen in one step	Cancel and place are separate actions, each needing its own confirmation	Confirm each step; the replacement order gets a fresh quote.