diff --git a/README.md b/README.md
index d69f237..2fa8bca 100644
--- a/README.md
+++ b/README.md
@@ -217,6 +217,32 @@ if ($response->getStatusCode() === 200) {
 }
 ```
 
+### Place Position TP/SL Order
+
+```php
+use Msr\LaravelBitunixApi\Requests\PlacePositionTpSlOrderRequestContract;
+
+$api = app(PlacePositionTpSlOrderRequestContract::class);
+
+// Place position TP/SL order with both take profit and stop loss
+$response = $api->placePositionTpSlOrder(
+    'BTCUSDT',          // symbol
+    '111',              // positionId
+    '50000',            // tpPrice
+    'LAST_PRICE',       // tpStopType
+    '45000',            // slPrice
+    'LAST_PRICE'        // slStopType
+);
+
+if ($response->getStatusCode() === 200) {
+    $data = json_decode($response->getBody()->getContents(), true);
+    if ($data['code'] === 0) {
+        echo "Position TP/SL order placed successfully!";
+        echo "Order ID: " . $data['data']['orderId'];
+    }
+}
+```
+
 ### Get Future Kline Data
 
 ```php
@@ -243,6 +269,7 @@ if ($response->getStatusCode() === 200) {
 
 - `placeOrder(...)` - Place a new order with full support for all order types, take profit, stop loss, and position management
 - `placeTpSlOrder(...)` - Place TP/SL order for existing positions
+- `placePositionTpSlOrder(...)` - Place position TP/SL order (closes position at market price when triggered)
 - `flashClosePosition(string $positionId)` - Flash close position by position ID
 
 ### Position Management
@@ -269,6 +296,7 @@ if ($response->getStatusCode() === 200) {
 - **Get Single Account**: 10 req/sec/uid
 - **Place Order**: 10 req/sec/uid
 - **Place TP/SL Order**: 10 req/sec/uid
+- **Place Position TP/SL Order**: 10 req/sec/uid
 - **Flash Close Position**: 5 req/sec/uid
 - **Get Pending Positions**: 10 req/sec/uid
 
@@ -311,6 +339,7 @@ vendor/bin/pest tests/ChangeMarginModeTest.php
 vendor/bin/pest tests/GetSingleAccountTest.php
 vendor/bin/pest tests/PlaceOrderTest.php
 vendor/bin/pest tests/PlaceTpSlOrderTest.php
+vendor/bin/pest tests/PlacePositionTpSlOrderTest.php
 vendor/bin/pest tests/FlashClosePositionTest.php
 vendor/bin/pest tests/GetPendingPositionsTest.php
 vendor/bin/pest tests/HeaderTest.php
@@ -325,6 +354,7 @@ See the `examples/` directory for complete usage examples:
 - `GetSingleAccountExample.php`
 - `PlaceOrderExample.php`
 - `PlaceTpSlOrderExample.php`
+- `PlacePositionTpSlOrderExample.php`
 - `FlashClosePositionExample.php`
 - `GetPendingPositionsExample.php`
 
diff --git a/examples/PlacePositionTpSlOrderExample.php b/examples/PlacePositionTpSlOrderExample.php
new file mode 100644
index 0000000..78fe45a
--- /dev/null
+++ b/examples/PlacePositionTpSlOrderExample.php
@@ -0,0 +1,254 @@
+<?php
+
+/**
+ * Example usage of Place Position TP/SL Order functionality
+ *
+ * This example demonstrates how to use the LaravelBitunixApi package
+ * to place position TP/SL orders on Bitunix exchange.
+ * 
+ * Note: When triggered, it will close the position at market price based on the position quantity at that time.
+ * Each position can only have one Position TP/SL Order.
+ */
+
+require_once __DIR__.'/../vendor/autoload.php';
+
+use Msr\LaravelBitunixApi\Requests\PlacePositionTpSlOrderRequestContract;
+
+// Example configuration (in real usage, these would be in your .env file)
+config([
+    'bitunix-api.future_base_uri' => 'https://fapi.bitunix.com/',
+    'bitunix-api.api_key' => 'your-api-key-here',
+    'bitunix-api.api_secret' => 'your-api-secret-here',
+    'bitunix-api.language' => 'en-US',
+]);
+
+try {
+    // Get the API instance
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    echo "🎯 Place Position TP/SL Order Examples\n\n";
+
+    // Example 1: Place position TP/SL order with both take profit and stop loss
+    echo "1. Placing position TP/SL order with both TP and SL...\n";
+    $response = $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',        // tpPrice
+        'LAST_PRICE',   // tpStopType
+        '45000',        // slPrice
+        'LAST_PRICE'    // slStopType
+    );
+
+    if ($response->getStatusCode() === 200) {
+        $data = json_decode($response->getBody()->getContents(), true);
+        if ($data['code'] === 0) {
+            echo "✅ Position TP/SL order placed successfully!\n";
+            echo 'Order ID: '.$data['data']['orderId']."\n";
+        } else {
+            echo '❌ API Error: '.$data['msg']."\n";
+        }
+    } else {
+        echo '❌ HTTP Error: '.$response->getStatusCode()."\n";
+    }
+
+    echo "\n";
+
+    // Example 2: Place position TP/SL order with take profit only
+    echo "2. Placing position TP/SL order with take profit only...\n";
+    $response = $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',        // tpPrice
+        'MARK_PRICE'    // tpStopType
+    );
+
+    if ($response->getStatusCode() === 200) {
+        $data = json_decode($response->getBody()->getContents(), true);
+        if ($data['code'] === 0) {
+            echo "✅ Position TP order placed successfully!\n";
+            echo 'Order ID: '.$data['data']['orderId']."\n";
+        } else {
+            echo '❌ API Error: '.$data['msg']."\n";
+        }
+    } else {
+        echo '❌ HTTP Error: '.$response->getStatusCode()."\n";
+    }
+
+    echo "\n";
+
+    // Example 3: Place position TP/SL order with stop loss only
+    echo "3. Placing position TP/SL order with stop loss only...\n";
+    $response = $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        null,           // tpPrice
+        null,           // tpStopType
+        '45000',        // slPrice
+        'MARK_PRICE'    // slStopType
+    );
+
+    if ($response->getStatusCode() === 200) {
+        $data = json_decode($response->getBody()->getContents(), true);
+        if ($data['code'] === 0) {
+            echo "✅ Position SL order placed successfully!\n";
+            echo 'Order ID: '.$data['data']['orderId']."\n";
+        } else {
+            echo '❌ API Error: '.$data['msg']."\n";
+        }
+    } else {
+        echo '❌ HTTP Error: '.$response->getStatusCode()."\n";
+    }
+
+    echo "\n";
+
+    // Example 4: Place position TP/SL order with different symbols
+    echo "4. Placing position TP/SL orders for different symbols...\n";
+    $symbols = ['BTCUSDT', 'ETHUSDT', 'ADAUSDT'];
+
+    foreach ($symbols as $symbol) {
+        echo "Placing position TP/SL order for {$symbol}...\n";
+        
+        $response = $api->placePositionTpSlOrder(
+            $symbol,
+            '111',
+            '50000',
+            'LAST_PRICE',
+            '45000',
+            'LAST_PRICE'
+        );
+        
+        if ($response->getStatusCode() === 200) {
+            $data = json_decode($response->getBody()->getContents(), true);
+            if ($data['code'] === 0) {
+                echo "✅ {$symbol} position TP/SL order placed successfully!\n";
+                echo 'Order ID: '.$data['data']['orderId']."\n";
+            } else {
+                echo "❌ Failed to place {$symbol} position TP/SL order: ".$data['msg']."\n";
+            }
+        } else {
+            echo "❌ HTTP Error for {$symbol}: ".$response->getStatusCode()."\n";
+        }
+    }
+
+    echo "\n";
+
+    // Example 5: Place position TP/SL order with different position IDs
+    echo "5. Placing position TP/SL orders for different position IDs...\n";
+    $positionIds = ['111', '222', '333'];
+
+    foreach ($positionIds as $positionId) {
+        echo "Placing position TP/SL order for position ID {$positionId}...\n";
+        
+        $response = $api->placePositionTpSlOrder(
+            'BTCUSDT',
+            $positionId,
+            '50000',
+            'LAST_PRICE',
+            '45000',
+            'LAST_PRICE'
+        );
+        
+        if ($response->getStatusCode() === 200) {
+            $data = json_decode($response->getBody()->getContents(), true);
+            if ($data['code'] === 0) {
+                echo "✅ Position {$positionId} TP/SL order placed successfully!\n";
+                echo 'Order ID: '.$data['data']['orderId']."\n";
+            } else {
+                echo "❌ Failed to place position {$positionId} TP/SL order: ".$data['msg']."\n";
+            }
+        } else {
+            echo "❌ HTTP Error for position {$positionId}: ".$response->getStatusCode()."\n";
+        }
+    }
+
+    echo "\n";
+
+    // Example 6: Place position TP/SL order with different stop types
+    echo "6. Placing position TP/SL orders with different stop types...\n";
+    $stopTypeCombinations = [
+        ['LAST_PRICE', 'LAST_PRICE'],
+        ['MARK_PRICE', 'MARK_PRICE'],
+        ['LAST_PRICE', 'MARK_PRICE'],
+        ['MARK_PRICE', 'LAST_PRICE'],
+    ];
+
+    foreach ($stopTypeCombinations as $index => $combination) {
+        echo "Placing position TP/SL order with stop types: {$combination[0]}, {$combination[1]}...\n";
+        
+        $response = $api->placePositionTpSlOrder(
+            'BTCUSDT',
+            '111',
+            '50000',
+            $combination[0],
+            '45000',
+            $combination[1]
+        );
+        
+        if ($response->getStatusCode() === 200) {
+            $data = json_decode($response->getBody()->getContents(), true);
+            if ($data['code'] === 0) {
+                echo "✅ Position TP/SL order with {$combination[0]}/{$combination[1]} placed successfully!\n";
+                echo 'Order ID: '.$data['data']['orderId']."\n";
+            } else {
+                echo "❌ Failed to place position TP/SL order: ".$data['msg']."\n";
+            }
+        } else {
+            echo "❌ HTTP Error: ".$response->getStatusCode()."\n";
+        }
+    }
+
+    echo "\n";
+
+    // Example 7: Error handling
+    echo "7. Error handling example...\n";
+    $response = $api->placePositionTpSlOrder('INVALID', '111');
+    
+    if ($response->getStatusCode() === 200) {
+        $data = json_decode($response->getBody()->getContents(), true);
+        if ($data['code'] === 0) {
+            echo "✅ Position TP/SL order placed successfully!\n";
+        } else {
+            echo '❌ API Error: '.$data['msg']."\n";
+            echo "This is expected for invalid symbol\n";
+        }
+    } else {
+        echo '❌ HTTP Error: '.$response->getStatusCode()."\n";
+    }
+
+} catch (Exception $e) {
+    echo '❌ Exception: '.$e->getMessage()."\n";
+}
+
+/**
+ * Place Position TP/SL Order Features:
+ * 
+ * - Place position TP/SL orders for existing positions
+ * - Rate limit: 10 req/sec/UID
+ * - Supports both take profit and stop loss
+ * - When triggered, closes position at market price
+ * - Each position can only have one Position TP/SL Order
+ * 
+ * Required Parameters:
+ * - symbol: Trading pair
+ * - positionId: Position ID associated with TP/SL
+ * 
+ * Optional Parameters:
+ * - tpPrice: Take-profit trigger price
+ * - tpStopType: Take-profit trigger type (LAST_PRICE/MARK_PRICE)
+ * - slPrice: Stop-loss trigger price
+ * - slStopType: Stop-loss trigger type (LAST_PRICE/MARK_PRICE)
+ * 
+ * Note: At least one of tpPrice or slPrice is required.
+ * 
+ * Key Differences from regular TP/SL Order:
+ * - Simpler parameters (no order types, prices, quantities)
+ * - Automatically closes position at market price when triggered
+ * - One order per position limit
+ * - Uses position/place_order endpoint
+ * 
+ * Environment Variables Required:
+ *
+ * BITUNIX_API_KEY=your-api-key
+ * BITUNIX_API_SECRET=your-api-secret
+ * BITUNIX_LANGUAGE=en-US
+ */
diff --git a/src/LaravelBitunixApi.php b/src/LaravelBitunixApi.php
index c0b3843..f04785d 100644
--- a/src/LaravelBitunixApi.php
+++ b/src/LaravelBitunixApi.php
@@ -11,10 +11,11 @@ use Msr\LaravelBitunixApi\Requests\GetPendingPositionsRequestContract;
 use Msr\LaravelBitunixApi\Requests\GetSingleAccountRequestContract;
 use Msr\LaravelBitunixApi\Requests\Header;
 use Msr\LaravelBitunixApi\Requests\PlaceOrderRequestContract;
+use Msr\LaravelBitunixApi\Requests\PlacePositionTpSlOrderRequestContract;
 use Msr\LaravelBitunixApi\Requests\PlaceTpSlOrderRequestContract;
 use Psr\Http\Message\ResponseInterface;
 
-class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginModeRequestContract, FlashClosePositionRequestContract, FutureKLineRequestContract, GetPendingPositionsRequestContract, GetSingleAccountRequestContract, PlaceOrderRequestContract, PlaceTpSlOrderRequestContract
+class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginModeRequestContract, FlashClosePositionRequestContract, FutureKLineRequestContract, GetPendingPositionsRequestContract, GetSingleAccountRequestContract, PlaceOrderRequestContract, PlaceTpSlOrderRequestContract, PlacePositionTpSlOrderRequestContract
 {
     private Client $publicFutureClient;
 
@@ -260,4 +261,38 @@ class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginMo
 
         return $response;
     }
+
+    public function placePositionTpSlOrder(
+        string $symbol,
+        string $positionId,
+        ?string $tpPrice = null,
+        ?string $tpStopType = null,
+        ?string $slPrice = null,
+        ?string $slStopType = null
+    ): ResponseInterface {
+        $body = [
+            'symbol' => $symbol,
+            'positionId' => $positionId,
+        ];
+
+        // Add optional parameters if provided
+        if ($tpPrice !== null) {
+            $body['tpPrice'] = $tpPrice;
+        }
+        if ($tpStopType !== null) {
+            $body['tpStopType'] = $tpStopType;
+        }
+        if ($slPrice !== null) {
+            $body['slPrice'] = $slPrice;
+        }
+        if ($slStopType !== null) {
+            $body['slStopType'] = $slStopType;
+        }
+
+        $response = $this->getPrivateFutureClient([], $body)->post('tpsl/position/place_order', [
+            'json' => $body,
+        ]);
+
+        return $response;
+    }
 }
diff --git a/src/LaravelBitunixApiServiceProvider.php b/src/LaravelBitunixApiServiceProvider.php
index 5dd04dc..2ab4fcc 100644
--- a/src/LaravelBitunixApiServiceProvider.php
+++ b/src/LaravelBitunixApiServiceProvider.php
@@ -10,6 +10,8 @@ use Msr\LaravelBitunixApi\Requests\FutureKLineRequestContract;
 use Msr\LaravelBitunixApi\Requests\GetPendingPositionsRequestContract;
 use Msr\LaravelBitunixApi\Requests\GetSingleAccountRequestContract;
 use Msr\LaravelBitunixApi\Requests\PlaceOrderRequestContract;
+use Msr\LaravelBitunixApi\Requests\PlacePositionTpSlOrderRequestContract;
+use Msr\LaravelBitunixApi\Requests\PlaceTpSlOrderRequestContract;
 use Spatie\LaravelPackageTools\Package;
 use Spatie\LaravelPackageTools\PackageServiceProvider;
 
@@ -41,5 +43,7 @@ class LaravelBitunixApiServiceProvider extends PackageServiceProvider
         $this->app->bind(FlashClosePositionRequestContract::class, LaravelBitunixApi::class);
         $this->app->bind(GetPendingPositionsRequestContract::class, LaravelBitunixApi::class);
         $this->app->bind(GetSingleAccountRequestContract::class, LaravelBitunixApi::class);
+        $this->app->bind(PlaceTpSlOrderRequestContract::class, LaravelBitunixApi::class);
+        $this->app->bind(PlacePositionTpSlOrderRequestContract::class, LaravelBitunixApi::class);
     }
 }
diff --git a/src/Requests/PlacePositionTpSlOrderRequestContract.php b/src/Requests/PlacePositionTpSlOrderRequestContract.php
new file mode 100644
index 0000000..1f866af
--- /dev/null
+++ b/src/Requests/PlacePositionTpSlOrderRequestContract.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Msr\LaravelBitunixApi\Requests;
+
+use Psr\Http\Message\ResponseInterface;
+
+interface PlacePositionTpSlOrderRequestContract
+{
+    /**
+     * Place Position TP/SL Order
+     * When triggered, it will close the position at market price based on the position quantity at that time.
+     * Each position can only have one Position TP/SL Order
+     *
+     * @param  string  $symbol  Trading pair
+     * @param  string  $positionId  Position ID associated with take-profit and stop-loss
+     * @param  string|null  $tpPrice  Take-profit trigger price
+     * @param  string|null  $tpStopType  Take-profit trigger type (LAST_PRICE/MARK_PRICE)
+     * @param  string|null  $slPrice  Stop-loss trigger price
+     * @param  string|null  $slStopType  Stop-loss trigger type (LAST_PRICE/MARK_PRICE)
+     */
+    public function placePositionTpSlOrder(
+        string $symbol,
+        string $positionId,
+        ?string $tpPrice = null,
+        ?string $tpStopType = null,
+        ?string $slPrice = null,
+        ?string $slStopType = null
+    ): ResponseInterface;
+}
diff --git a/tests/PlacePositionTpSlOrderTest.php b/tests/PlacePositionTpSlOrderTest.php
new file mode 100644
index 0000000..8fd3a8d
--- /dev/null
+++ b/tests/PlacePositionTpSlOrderTest.php
@@ -0,0 +1,223 @@
+<?php
+
+use Msr\LaravelBitunixApi\Requests\PlacePositionTpSlOrderRequestContract;
+
+beforeEach(function () {
+    config([
+        'bitunix-api.future_base_uri' => 'https://fapi.bitunix.com/',
+        'bitunix-api.api_key' => 'test-api-key',
+        'bitunix-api.api_secret' => 'test-secret-key',
+        'bitunix-api.language' => 'en-US',
+    ]);
+});
+
+it('can place position TP/SL order with required parameters only', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111'))
+        ->not->toThrow(Exception::class);
+});
+
+it('can place position TP/SL order with take profit only', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',        // tpPrice
+        'LAST_PRICE'    // tpStopType
+    ))->not->toThrow(Exception::class);
+});
+
+it('can place position TP/SL order with stop loss only', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        null,           // tpPrice
+        null,           // tpStopType
+        '45000',        // slPrice
+        'LAST_PRICE'    // slStopType
+    ))->not->toThrow(Exception::class);
+});
+
+it('can place position TP/SL order with both take profit and stop loss', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',        // tpPrice
+        'LAST_PRICE',   // tpStopType
+        '45000',        // slPrice
+        'LAST_PRICE'    // slStopType
+    ))->not->toThrow(Exception::class);
+});
+
+it('validates place position TP/SL order method exists', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    expect(method_exists($api, 'placePositionTpSlOrder'))->toBeTrue();
+});
+
+it('can handle different symbol formats', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    $symbols = ['BTCUSDT', 'ETHUSDT', 'ADAUSDT'];
+
+    foreach ($symbols as $symbol) {
+        expect(fn() => $api->placePositionTpSlOrder($symbol, '111'))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('can handle different position ID formats', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    $positionIds = ['111', 'position-123', '19848247723672'];
+
+    foreach ($positionIds as $positionId) {
+        expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', $positionId))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('can handle different stop types', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    $stopTypes = ['LAST_PRICE', 'MARK_PRICE'];
+
+    foreach ($stopTypes as $stopType) {
+        expect(fn() => $api->placePositionTpSlOrder(
+            'BTCUSDT',
+            '111',
+            '50000',
+            $stopType,
+            '45000',
+            $stopType
+        ))->not->toThrow(Exception::class);
+    }
+});
+
+it('can handle different price formats', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    $prices = ['50000', '50000.1', '50000.01', '50000.001'];
+
+    foreach ($prices as $price) {
+        expect(fn() => $api->placePositionTpSlOrder(
+            'BTCUSDT',
+            '111',
+            $price,
+            'LAST_PRICE',
+            '45000',
+            'LAST_PRICE'
+        ))->not->toThrow(Exception::class);
+    }
+});
+
+it('can handle multiple place position TP/SL order calls', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    $calls = [
+        ['BTCUSDT', '111'],
+        ['ETHUSDT', '222', '3000', 'LAST_PRICE'],
+        ['ADAUSDT', '333', null, null, '0.5', 'LAST_PRICE'],
+        ['BTCUSDT', '444', '50000', 'LAST_PRICE', '45000', 'LAST_PRICE'],
+    ];
+
+    foreach ($calls as $params) {
+        expect(fn() => $api->placePositionTpSlOrder(...$params))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('validates place position TP/SL order response structure', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    // This test verifies the method can be called without throwing exceptions
+    // The actual response structure will be validated by the API
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111'))
+        ->not->toThrow(Exception::class);
+});
+
+it('can handle edge cases for position TP/SL order', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    // Test with minimum required parameters
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111'))
+        ->not->toThrow(Exception::class);
+
+    // Test with all parameters
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',
+        'LAST_PRICE',
+        '45000',
+        'LAST_PRICE'
+    ))->not->toThrow(Exception::class);
+});
+
+it('can handle special characters in parameters', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    // Test with special characters in position ID
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', 'pos-123-abc'))
+        ->not->toThrow(Exception::class);
+
+    // Test with decimal prices
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000.123',
+        'LAST_PRICE',
+        '45000.456',
+        'LAST_PRICE'
+    ))->not->toThrow(Exception::class);
+});
+
+it('can handle different combinations of parameters', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    // Test with only TP price
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111', '50000'))
+        ->not->toThrow(Exception::class);
+
+    // Test with only SL price
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111', null, null, '45000'))
+        ->not->toThrow(Exception::class);
+
+    // Test with only TP stop type
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111', '50000', 'MARK_PRICE'))
+        ->not->toThrow(Exception::class);
+
+    // Test with only SL stop type
+    expect(fn() => $api->placePositionTpSlOrder('BTCUSDT', '111', null, null, '45000', 'MARK_PRICE'))
+        ->not->toThrow(Exception::class);
+});
+
+it('can handle position TP/SL order with mixed stop types', function () {
+    $api = app(PlacePositionTpSlOrderRequestContract::class);
+
+    // Test with different stop types for TP and SL
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',
+        'LAST_PRICE',
+        '45000',
+        'MARK_PRICE'
+    ))->not->toThrow(Exception::class);
+
+    // Test with opposite stop types
+    expect(fn() => $api->placePositionTpSlOrder(
+        'BTCUSDT',
+        '111',
+        '50000',
+        'MARK_PRICE',
+        '45000',
+        'LAST_PRICE'
+    ))->not->toThrow(Exception::class);
+});