> For the complete documentation index, see [llms.txt](https://docs.ticko.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ticko.xyz/api-documentation/trade/rest-api/modify-order.md).

# Modify Order

## Modify Order

> Modifies an existing order atomically.\
> \
> \*\*Signing Type: A\*\*\
> \
> \*\*Rate-limit weight\*\*\
> \
> \- \*\*By IP:\*\* \`1\`\
> \- \*\*By address:\*\* \`1 + floor(batch\_length / 10)\` where \`batch\_length = 1\`

```json
{"openapi":"3.1.0","info":{"title":"Ticko API","version":"1.0"},"tags":[{"name":"Trade","description":"Order lifecycle: place, modify, cancel (single and batch), chase, cancel-all, plus open orders, order history, and executions. All write endpoints are signed (Signing Type A)."}],"servers":[{"url":"https://api.testnet.ticko.xyz/v1","description":"Testnet"}],"paths":{"/trade/orders/modify":{"post":{"operationId":"modifyOrder","summary":"Modify Order","tags":["Trade"],"description":"Modifies an existing order atomically.\n\n**Signing Type: A**\n\n**Rate-limit weight**\n\n- **By IP:** `1`\n- **By address:** `1 + floor(batch_length / 10)` where `batch_length = 1`","requestBody":{"required":true,"content":{"application/json":{"schema":{"allOf":[{"type":"object","properties":{"order_id":{"type":"string","description":"System order ID. Required if `client_order_id` is omitted. Takes precedence if both are sent."},"client_order_id":{"type":"string","description":"Client order ID. Required if `order_id` is omitted."},"order_type":{"type":"string","enum":["limit","market"],"description":"Only for untriggered conditional orders. Future child order type: `limit` or `market`."},"price":{"type":"string","description":"New price. Required when changing an untriggered conditional order to future `limit`; forbidden when changing it to future `market`."},"quantity":{"type":"string","description":"New quantity. Must be greater than already-filled quantity."},"conditional":{"type":"object","description":"Conditional trigger updates.","properties":{"trigger_price":{"type":"string","description":"New trigger price. If the modified condition would trigger immediately, the request is rejected."},"trigger_by":{"type":"string","enum":["last_price","mark_price","oracle_price"],"description":"New trigger price source. Spot supports `last_price`; perpetuals support `last_price`, `mark_price`, or `oracle_price`."}}},"tpsl":{"type":"object","description":"TPSL updates. To remove attached TPSL, set both trigger prices to `\"0\"`.","properties":{"tp_trigger_price":{"type":"string","description":"New take-profit trigger price."},"tp_trigger_by":{"type":"string","description":"New take-profit trigger price source."},"tp_order_price":{"type":"string","description":"New take-profit limit price."},"sl_trigger_price":{"type":"string","description":"New stop-loss trigger price."},"sl_trigger_by":{"type":"string","description":"New stop-loss trigger price source."},"sl_order_price":{"type":"string","description":"New stop-loss limit price."}}}}},{"$ref":"#/components/schemas/SigningFieldsA"}]}}}},"responses":{"200":{"description":"Success","content":{"application/json":{"schema":{"allOf":[{"$ref":"#/components/schemas/Envelope"},{"type":"object","properties":{"data":{"type":"object","properties":{"tx_hash":{"type":"string","description":"Transaction hash."},"order_id":{"type":"string","description":"Modified order ID."},"client_order_id":{"type":["string","null"],"description":"Client order ID."}}}}}]}}}}}}}},"components":{"schemas":{"SigningFieldsA":{"type":"object","required":["signer_address","nonce","expires_after","signature"],"properties":{"signer_address":{"type":"string","description":"Address of the user wallet or Agent key that signs the request."},"target_address":{"type":"string","description":"Account being operated. If omitted, defaults to `signer_address`."},"nonce":{"type":"integer","description":"Millisecond timestamp nonce. Must be unique per signer."},"expires_after":{"type":"integer","description":"Millisecond timestamp after which the request expires."},"signature":{"$ref":"#/components/schemas/Signature"}}},"Signature":{"type":"object","required":["r","s","v"],"description":"ECDSA signature over the EIP-712 `signing_hash`.","properties":{"r":{"type":"string","description":"32-byte hex string with `0x` prefix."},"s":{"type":"string","description":"32-byte hex string with `0x` prefix."},"v":{"type":"integer","enum":[27,28],"description":"Recovery identifier, `27` or `28`."}}},"Envelope":{"type":"object","description":"Standard success response envelope. `data` is defined per endpoint.","properties":{"code":{"type":"string","description":"`\"0\"` on success."},"msg":{"type":"string","description":"Empty on success."},"trace_code":{"type":"string","description":"Backend trace identifier. Empty on success."}}}}}}
```


---

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```
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