diff --git a/app/Enums/FMSResultCode.php b/app/Enums/FMSResultCode.php
index af8d06a9..810d1db5 100644
--- a/app/Enums/FMSResultCode.php
+++ b/app/Enums/FMSResultCode.php
@@ -2,24 +2,24 @@
 
 namespace App\Enums;
 
-enum FMSResultCode: int
+enum FMSResultCode: string
 {
-    case SUCCESSFUL = 0;
-    case INVALID_CREDENTIAL = 1;
-    case NO_GPS_DEVICE_CONNECTED = 2;
-    case UNAUTHORIZE = 3;
-    case RATE_LIMIT = 4;
-    case INVALID_PARAMETERS = 5;
+    case SUCCESSFUL = "0";
+    case INVALID_CREDENTIAL = "-1";
+    case NO_GPS_DEVICE_CONNECTED = "-2";
+    case UNAUTHORIZE = "-3";
+    case RATE_LIMIT = "-4";
+    case INVALID_PARAMETERS = "-5";
 
-    public static function name(int $state): string
+    public static function name(string $state): string
     {
         $mapArray = [
-            0 => "اﺟﺮاي ﺗﺎﺑﻊ ﻣﻮﻓﻘﯿﺖ آﻣﯿﺰ ﺑﻮد.",
-            1 => "نام ﮐﺎرﺑﺮي ﯾﺎ ﮐﻠﻤﻪ ﻋﺒﻮر ﺻﺤﯿﺢ ﻧﯿﺴﺖ.",
-            2 => "خودرو با کد مورد نظر وجود ندارد یا دستگاه ردیاب به آن متصل نیست.",
-            3 => "کاربر به خودرو مورد نظر دسترسی ندارد.",
-            4 => "ﺗﻌﺪاد دﻓﻌﺎت ﺟﺮاي ﺗﺎﺑﻊ ﺑﯿﺶ از ﺣﺪ ﻣﺠﺎز اﺳﺖ(اﯾﻦ ﺳﺮوﯾﺲ را در ﻫﺮ ثاﻧﯿﻪ ﻓﻘﻂ ﯾﮏ ﺑﺎر ﻣﯽﺗﻮان اﺟﺮاﮐﺮد)",
-            5 => "پارامتر های داده شده صحیح نیستند",
+            "0" => "اﺟﺮاي ﺗﺎﺑﻊ ﻣﻮﻓﻘﯿﺖ آﻣﯿﺰ ﺑﻮد.",
+            "-1" => "نام ﮐﺎرﺑﺮي ﯾﺎ ﮐﻠﻤﻪ ﻋﺒﻮر ﺻﺤﯿﺢ ﻧﯿﺴﺖ.",
+            "-2" => "خودرو با کد مورد نظر وجود ندارد یا دستگاه ردیاب به آن متصل نیست.",
+            "-3" => "کاربر به خودرو مورد نظر دسترسی ندارد.",
+            "-4" => "ﺗﻌﺪاد دﻓﻌﺎت ﺟﺮاي ﺗﺎﺑﻊ ﺑﯿﺶ از ﺣﺪ ﻣﺠﺎز اﺳﺖ(اﯾﻦ ﺳﺮوﯾﺲ را در ﻫﺮ ثاﻧﯿﻪ ﻓﻘﻂ ﯾﮏ ﺑﺎر ﻣﯽﺗﻮان اﺟﺮاﮐﺮد)",
+            "-5" => "پارامتر های داده شده صحیح نیستند",
         ];
 
         return $mapArray[$state];
diff --git a/app/Listeners/V3/Dashboard/Mission/SendDataToFMSListener.php b/app/Listeners/V3/Dashboard/Mission/SendDataToFMSListener.php
index 1d0b249b..df8d92f4 100644
--- a/app/Listeners/V3/Dashboard/Mission/SendDataToFMSListener.php
+++ b/app/Listeners/V3/Dashboard/Mission/SendDataToFMSListener.php
@@ -29,7 +29,7 @@ class SendDataToFMSListener implements ShouldQueue
         $mission = $event->mission;
 
         $this->getErrorRateService->setInputParameters([
-            'url' => config('fms_web_services.Error_Rate.url'),
+            'username' => config('fms_web_services.Error_Rate.username'),
             'password' => config('fms_web_services.Error_Rate.password'),
             'missionArea' => $mission->area['coordinates'],
             'missionStartDT' => $mission->start_time->format('Y-m-d\TH:i:s'),
diff --git a/app/Services/FMS/GetErrorRateService.php b/app/Services/FMS/GetErrorRateService.php
index bf2f699c..a01562de 100644
--- a/app/Services/FMS/GetErrorRateService.php
+++ b/app/Services/FMS/GetErrorRateService.php
@@ -10,13 +10,11 @@ class GetErrorRateService
 {
     protected string $url;
     protected string $channelName;
-    protected string $password;
-    protected string $username;
     protected array $inputParameters;
 
     public function __construct()
     {
-        $this->username = config('fms_web_services.Error_Rate.username');
+        $this->url = config('fms_web_services.Error_Rate.url');
         $this->channelName = 'fms_error_rate';
     }
 
@@ -48,9 +46,10 @@ class GetErrorRateService
     public function sendRequest(): array
     {
         return Http::withHeaders(['Content-Type' => 'application/json'])
+            ->withBody(json_encode($this->inputParameters))
             ->throw()
             ->withoutVerifying()
-            ->post($this->url, $this->inputParameters)
+            ->post($this->url)
             ->json();
     }
 }