src/Socialbox/Exceptions/Standard/InvalidRpcArgumentException.php

@@ -0,0 +1,19 @@
+<?php
+
+    namespace Socialbox\Exceptions\Standard;
+
+    use Socialbox\Enums\StandardError;
+
+    class InvalidRpcArgumentException extends StandardException
+    {
+        /**
+         * Thrown when a required parameter is missing
+         *
+         * @param string $parameterName The name of the parameter that is missing
+         * @param string $reason The reason why the parameter is invalid
+         */
+        public function __construct(string $parameterName, string $reason)
+        {
+            parent::__construct(sprintf('The parameter %s is invalid: %s', $parameterName, $reason), StandardError::RPC_INVALID_ARGUMENTS);
+        }
+    }

src/Socialbox/Exceptions/Standard/MissingRpcArgumentException.php

@@ -4,12 +4,12 @@
 
     use Socialbox\Enums\StandardError;
 
-    class MissingArgumentException extends StandardException
+    class MissingRpcArgumentException extends StandardException
     {
         /**
          * Thrown when a required parameter is missing
          *
-         * @param string $parameterName
+         * @param string $parameterName The name of the missing parameter
          */
         public function __construct(string $parameterName)
         {