Modify Order Quantity

ModifyQuantity

First use MakeModifyQuantityObj to create a ModifyQuantityObj object

Parameter	Type	Description
orderResult	OrderResult	The order to be modified
quantity	int64	The modified quantity (Quantity after modification includes the filled part of this order)

Pass the returned object into the ModifyQuantity method.

Input Parameters

Parameter	Type	Description
account	Account	Account
modifyQuantityObj	ModifyQuantityObj	Order to modify
unblock	*bool (optional) (default = false)	Whether to use non-blocking

Result Return

Parameter	Type	Description
IsSuccess	bool	Whether successful
Data	*OrderResult	Returns order information
Message	*string	Returns error message when IsSuccess = false

Modification Information OrderResult Fields

Return type : Object

Parameter	Type	Description
FunctionType	*int64	Function Type: 0 New Order, 10 Execute New Order, 15 Change Price, 20 Change Qty, 30 Cancel Order, 90 Fail
Date	*string	Transaction Date
SeqNo	*string	Order Sequence Number
BranchNo	*string	Branch Code
Account	*string	Account
OrderNo	*string	Order Number
AssetType	*int64	Asset Type: 0 Securities
Market	*string	Market: TAIEX Listed Stocks, TAISDAQ OTC Stocks, TAIEMG Emerging Stocks
MarketType	MarketType	Market Type Category: MarketTypeCommon Regular Stock, MarketTypeFixing Fixing, MarketTypeIntradayOdd Intraday Odd Lot, MarketTypeOdd Post-market Odd Lot, MarketTypeEmg Emerging, MarketTypeEmgOdd Emerging Odd Lot
StockNo	*string	Stock Symbol
BuySell	*BsAction	Buy/Sell Action: BsActionBuy Buy, BsActionSell Sell
PriceType	*PriceType	Effective Price Type: PriceTypeLimit Limit, PriceTypeLimitUp Limit Up, PriceTypeLimitDown Limit Down, PriceTypeMarket Market, PriceTypeReference Reference
Price	*string	Price
Quantity	*int64	Original Order Quantity
TimeInForce	*TimeInForce	Order Condition: TimeInForceRod ROD, TimeInForceFok FOK, TimeInForceIoc IOC
OrderType	*OrderType	Order Type: OrderTypeStock Common, OrderTypeMargin Margin, OrderTypeShort Short Sell, OrderTypeDayTrade Day Trade, OrderTypeSbl SBL
IsPreOrder	*bool	Is Pre-order
Status	*int64	Order Status: 0 Pre-order, 4 Sending to Backend, 9 Connection Timeout, 10 Order Success, 30 Cancelled Unfilled, 40 Partial Fill/Rest Cancelled, 50 Fully Filled, 90 Fail
AfterPriceType	*PriceType	Effective Price Type: PriceTypeLimit Limit, PriceTypeLimitUp Limit Up, PriceTypeLimitDown Limit Down, PriceTypeMarket Market, PriceTypeReference Reference
AfterPrice	*string	Effective Order Price
Unit	*int64	Unit
AfterQty	*int64	Effective Order Quantity (including filled part)
FilledQty	*int64	Filled Quantity
FilledMoney	*int64	Filled Amount
BeforeQty	*int64	Effective Qty Before Change
BeforePrice	*string	Effective Price Before Change
UserDef	*string	User Defined Field
LastTime	*string	Last Modified Time
Details	*string	Order History (Value exists only when querying OrderResultDetail or OrderHistory)
ErrorMessage	*string	Error Message

Request Example

package main

import (
    "fmt"
    "fubon"
)

func main() {
    // Initialize SDK and login
    sdk := fubon.NewFubonSDK()
    
    // ... Login, connection, and other initialization steps ...
    
    // Get the order to modify first
    ordResult, err := sdk.Stock.GetOrderResults(account)
    if err != nil {
        fmt.Printf("❌ Get Order Results Format/Parse Error: %v\n", err)
        return
    }
    
    var modifyOrder fubon.OrderResult
    if ordResult.Data != nil && len(*ordResult.Data) > 0 {
        modifyOrder = (*ordResult.Data)[0]
        fmt.Println("Selected order for quantity modification")
        fmt.Printf("OrderNo: %s, Current Quantity: %d\n", 
            *modifyOrder.OrderNo, *modifyOrder.AfterQty)
        
        // Create Modify Quantity Object (Can only reduce quantity)
        newQuantity := int64(1000)
        modifyQtyObj, err := sdk.Stock.MakeModifyQuantityObj(modifyOrder, newQuantity)
        if err != nil {
            fmt.Printf("❌ Make Modify Quantity Format/Parse Error: %v (Type: %T)\n", err, err)
            return
        }
        
        // Execute Modify Quantity
        unblock := false
        modifyQtyRes, err := sdk.Stock.ModifyQuantity(account, modifyQtyObj, &unblock)
        if err != nil {
            fmt.Printf("❌ Modify Quantity Format/Parse Error: %v (Type: %T)\n", err, err)
            return
        }
        
        // Check Success
        if !modifyQtyRes.IsSuccess {
            message := "No message"
            if modifyQtyRes.Message != nil {
                message = *modifyQtyRes.Message
            }
            fmt.Printf("Modify Quantity failed. Message: %s\n", message)
            return
        }
        
        // Output Modification Result
        if modifyQtyRes.Data != nil {
            fmt.Println("✅ Quantity modified successfully!")
            fmt.Printf("FunctionType: %d (20=改量)\n", *modifyQtyRes.Data.FunctionType)
            fmt.Printf("BeforeQty: %d -> AfterQty: %d\n", 
                *modifyQtyRes.Data.BeforeQty, *modifyQtyRes.Data.AfterQty)
        } else {
            fmt.Println("Modify Quantity succeeded but no data returned.")
        }
    } else {
        fmt.Println("⚠️  No orders found for quantity modification")
    }
}

Response Example

// ModifyQuantity Return Structure
Result{
    IsSuccess: true,
    Message:   nil,
    Data: &OrderResult{
        FunctionType:   20,                   // Function Type (20=Change Qty)
        Date:           "2024/03/08",         // Transaction Date
        SeqNo:          "00000308866",        // Order Sequence Number
        BranchNo:       "6460",               // Branch Code
        Account:        "26",                 // Account
        OrderNo:        "x0011",              // Order Number
        AssetType:      0,                    // Asset Type
        Market:         "TAIEX",              // Market Type
        MarketType:     Common,               // Market Type Category
        StockNo:        "1101",               // Stock Symbol
        BuySell:        Sell,                 // Buy/Sell Action
        PriceType:      Limit,                // Original Price Type
        Price:          "41.2",               // Price
        Quantity:       5000,                 // Original Order Quantity
        TimeInForce:    Rod,                  // Order Condition
        OrderType:      Stock,                // Order Type
        IsPreOrder:     false,                // Is Pre-order
        Status:         10,                   // Order Status
        AfterPriceType: Limit,                // Effective Price Type
        AfterPrice:     "41.3",               // Valid order price
        Unit:           1000,                 // Unit
        AfterQty:       1000,                 // Effective Order Quantity (After modification)
        FilledQty:      0,                    // Filled Quantity
        FilledMoney:    0,                    // Filled Amount
        BeforeQty:      3000,                 // Effective Qty Before Change
        BeforePrice:    "41.2",               // Effective Price Before Change
        UserDef:        "12345678",           // User Defined Field
        LastTime:       "12:56:28.966",       // Last Modified Time
        Details:        nil,                  // Order history
        ErrorMessage:   "",                   // Error Message
    },
}