> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.ninjatrader.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ninjatrader.com/_mcp/server. # Modify Order POST https://demo.tradovateapi.com/v1/order/modifyorder Content-Type: application/json ### Modify the parameters of a working order. **Available to:** All authenticated users **Environments:** Demo, Live **[Rate Limit](/api/authentication#request-rate-limits-and-time-penalties):** 750 requests per hour, 1-second back-off, counts all requests Requests changes to a working order — for example, the trigger `price` of a `Stop` or `Limit` order, or the `orderQty`. Identify the order by its `orderId`. A successful request isn't a guarantee that the change is applied: market, exchange, and logical rules still apply, and the order may already have filled or been cancelled. When the request is rejected, the response carries a `failureReason` and `failureText`. **Common Failure Scenarios** - The order already filled or was cancelled, so it can no longer be modified (`TooLate`). - Another command for the order is still being processed (`AnotherCommandPending`). - The new price is invalid for the order type (`InvalidPrice`). **Error Messages** | `failureReason` | Trigger | |-----------------|---------| | `TooLate` | The order already filled or was cancelled. | | `AnotherCommandPending` | A previous command for this order hasn't completed. | | `InvalidPrice` | The requested price is invalid for the order type. | See the `failureReason` enum in the response schema for the complete list of values. Reference: https://docs.ninjatrader.com/api/rest-api-endpoints/orders/modify-order ## OpenAPI Specification ```yaml openapi: 3.1.0 info: title: public version: 1.0.0 paths: /order/modifyorder: post: operationId: modifyOrder summary: Modify Order description: >- ### Modify the parameters of a working order. **Available to:** All authenticated users **Environments:** Demo, Live **[Rate Limit](/api/authentication#request-rate-limits-and-time-penalties):** 750 requests per hour, 1-second back-off, counts all requests Requests changes to a working order — for example, the trigger `price` of a `Stop` or `Limit` order, or the `orderQty`. Identify the order by its `orderId`. A successful request isn't a guarantee that the change is applied: market, exchange, and logical rules still apply, and the order may already have filled or been cancelled. When the request is rejected, the response carries a `failureReason` and `failureText`. **Common Failure Scenarios** - The order already filled or was cancelled, so it can no longer be modified (`TooLate`). - Another command for the order is still being processed (`AnotherCommandPending`). - The new price is invalid for the order type (`InvalidPrice`). **Error Messages** | `failureReason` | Trigger | |-----------------|---------| | `TooLate` | The order already filled or was cancelled. | | `AnotherCommandPending` | A previous command for this order hasn't completed. | | `InvalidPrice` | The requested price is invalid for the order type. | See the `failureReason` enum in the response schema for the complete list of values. tags: - Orders parameters: - name: Authorization in: header description: Bearer authentication required: true schema: type: string responses: '200': description: CommandResult content: application/json: schema: $ref: '#/components/schemas/CommandResult' requestBody: content: application/json: schema: $ref: '#/components/schemas/ModifyOrder' servers: - url: https://demo.tradovateapi.com/v1 description: Demo - url: https://live.tradovateapi.com/v1 description: Live components: schemas: ModifyOrderOrderType: type: string enum: - Limit - LimitIfTouched - MIT - Market - MarketLimit - MarketStopWithProtection - MarketWithProtection - QTS - Stop - StopLimit - TrailingStop - TrailingStopLimit description: >- Limit, LimitIfTouched, MIT, Market, MarketLimit, MarketStopWithProtection, MarketWithProtection, QTS, Stop, StopLimit, TrailingStop, TrailingStopLimit title: ModifyOrderOrderType ModifyOrderTimeInForce: type: string enum: - Day - FOK - GTC - GTD - IOC description: Day, FOK, GTC, GTD, IOC title: ModifyOrderTimeInForce ModifyOrder: type: object properties: orderId: type: integer format: int64 clOrdId: type: string orderQty: type: integer orderType: $ref: '#/components/schemas/ModifyOrderOrderType' description: >- Limit, LimitIfTouched, MIT, Market, MarketLimit, MarketStopWithProtection, MarketWithProtection, QTS, Stop, StopLimit, TrailingStop, TrailingStopLimit price: type: number format: double stopPrice: type: number format: double limitIfTouchedPrice: type: number format: double maxShow: type: integer pegDifference: type: number format: double timeInForce: $ref: '#/components/schemas/ModifyOrderTimeInForce' description: Day, FOK, GTC, GTD, IOC expireTime: type: string format: date-time text: type: string activationTime: type: string format: date-time customTag50: type: string isAutomated: type: boolean required: - orderId - orderQty - orderType title: ModifyOrder CommandResultFailureReason: type: string enum: - AccountClosed - AdvancedTrailingStopUnsupported - AnotherCommandPending - BackMonthProhibited - ExecutionProviderNotConfigured - ExecutionProviderUnavailable - InvalidContract - InvalidPrice - KeyInformationDocumentRequired - LiquidationOnly - LiquidationOnlyBeforeExpiration - MaxOrderQtyIsNotSpecified - MaxOrderQtyLimitReached - MaxPosLimitMisconfigured - MaxPosLimitReached - MaxTotalPosLimitReached - MultipleAccountPlanRequired - NoQuote - NotEnoughLiquidity - OtherExecutionRelated - ParentRejected - RiskCheckTimeout - SSFNFAComplianceRequired - SSFNFAComplianceRequiredJointOnly - SSFRiskDisclosureAcknowledgmentRequired - SessionClosed - Success - TooLate - TradingLocked - TrailingStopNonOrderQtyModify - Unauthorized - UnknownReason - Unsupported description: >- AccountClosed, AdvancedTrailingStopUnsupported, AnotherCommandPending, BackMonthProhibited, ExecutionProviderNotConfigured, ExecutionProviderUnavailable, InvalidContract, InvalidPrice, KeyInformationDocumentRequired, LiquidationOnly, LiquidationOnlyBeforeExpiration, MaxOrderQtyIsNotSpecified, MaxOrderQtyLimitReached, MaxPosLimitMisconfigured, MaxPosLimitReached, MaxTotalPosLimitReached, MultipleAccountPlanRequired, NoQuote, NotEnoughLiquidity, OtherExecutionRelated, ParentRejected, RiskCheckTimeout, SSFNFAComplianceRequired, SSFNFAComplianceRequiredJointOnly, SSFRiskDisclosureAcknowledgmentRequired, SessionClosed, Success, TooLate, TradingLocked, TrailingStopNonOrderQtyModify, Unauthorized, UnknownReason, Unsupported title: CommandResultFailureReason CommandResult: type: object properties: failureReason: $ref: '#/components/schemas/CommandResultFailureReason' description: >- AccountClosed, AdvancedTrailingStopUnsupported, AnotherCommandPending, BackMonthProhibited, ExecutionProviderNotConfigured, ExecutionProviderUnavailable, InvalidContract, InvalidPrice, KeyInformationDocumentRequired, LiquidationOnly, LiquidationOnlyBeforeExpiration, MaxOrderQtyIsNotSpecified, MaxOrderQtyLimitReached, MaxPosLimitMisconfigured, MaxPosLimitReached, MaxTotalPosLimitReached, MultipleAccountPlanRequired, NoQuote, NotEnoughLiquidity, OtherExecutionRelated, ParentRejected, RiskCheckTimeout, SSFNFAComplianceRequired, SSFNFAComplianceRequiredJointOnly, SSFRiskDisclosureAcknowledgmentRequired, SessionClosed, Success, TooLate, TradingLocked, TrailingStopNonOrderQtyModify, Unauthorized, UnknownReason, Unsupported failureText: type: string commandId: type: integer format: int64 title: CommandResult securitySchemes: bearer_access_token: type: http scheme: bearer ``` ## Examples **Request** ```json { "orderId": 1, "orderQty": 1, "orderType": "Limit" } ``` **Response** ```json { "failureReason": "AccountClosed", "failureText": "string", "commandId": 1 } ``` **SDK Code** ```python import requests url = "https://demo.tradovateapi.com/v1/order/modifyorder" payload = { "orderId": 1, "orderQty": 1, "orderType": "Limit" } headers = { "Authorization": "Bearer ", "Content-Type": "application/json" } response = requests.post(url, json=payload, headers=headers) print(response.json()) ``` ```javascript const url = 'https://demo.tradovateapi.com/v1/order/modifyorder'; const options = { method: 'POST', headers: {Authorization: 'Bearer ', 'Content-Type': 'application/json'}, body: '{"orderId":1,"orderQty":1,"orderType":"Limit"}' }; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://demo.tradovateapi.com/v1/order/modifyorder" payload := strings.NewReader("{\n \"orderId\": 1,\n \"orderQty\": 1,\n \"orderType\": \"Limit\"\n}") req, _ := http.NewRequest("POST", url, payload) req.Header.Add("Authorization", "Bearer ") req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body)) } ``` ```ruby require 'uri' require 'net/http' url = URI("https://demo.tradovateapi.com/v1/order/modifyorder") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Post.new(url) request["Authorization"] = 'Bearer ' request["Content-Type"] = 'application/json' request.body = "{\n \"orderId\": 1,\n \"orderQty\": 1,\n \"orderType\": \"Limit\"\n}" response = http.request(request) puts response.read_body ``` ```java import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.post("https://demo.tradovateapi.com/v1/order/modifyorder") .header("Authorization", "Bearer ") .header("Content-Type", "application/json") .body("{\n \"orderId\": 1,\n \"orderQty\": 1,\n \"orderType\": \"Limit\"\n}") .asString(); ``` ```php request('POST', 'https://demo.tradovateapi.com/v1/order/modifyorder', [ 'body' => '{ "orderId": 1, "orderQty": 1, "orderType": "Limit" }', 'headers' => [ 'Authorization' => 'Bearer ', 'Content-Type' => 'application/json', ], ]); echo $response->getBody(); ``` ```csharp using RestSharp; var client = new RestClient("https://demo.tradovateapi.com/v1/order/modifyorder"); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", "Bearer "); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", "{\n \"orderId\": 1,\n \"orderQty\": 1,\n \"orderType\": \"Limit\"\n}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); ``` ```swift import Foundation let headers = [ "Authorization": "Bearer ", "Content-Type": "application/json" ] let parameters = [ "orderId": 1, "orderQty": 1, "orderType": "Limit" ] as [String : Any] let postData = JSONSerialization.data(withJSONObject: parameters, options: []) let request = NSMutableURLRequest(url: NSURL(string: "https://demo.tradovateapi.com/v1/order/modifyorder")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "POST" request.allHTTPHeaderFields = headers request.httpBody = postData as Data let session = URLSession.shared let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in if (error != nil) { print(error as Any) } else { let httpResponse = response as? HTTPURLResponse print(httpResponse) } }) dataTask.resume() ```