diff --git a/src/Balikobot/Balikobot.php b/src/Balikobot/Balikobot.php
index 0815c3f..f3bde24 100644
--- a/src/Balikobot/Balikobot.php
+++ b/src/Balikobot/Balikobot.php
@@ -432,6 +432,7 @@ class Balikobot {
      */
     const
         EXCEPTION_INVALID_REQUEST = 400, /*< Invalid request */
+        EXCEPTION_NOT_SUPPORTED = 401, /*< Not supported */
         EXCEPTION_SERVER_ERROR = 500; /*< Unexpected response from the server */
 
 
@@ -711,6 +712,8 @@ public function getServices($shipper) {
 
         $response = $this->call(self::REQUEST_SERVICES, $shipper);
 
+        if (isset($response['status']) && ($response['status'] == 409))
+            throw new \InvalidArgumentException("The $shipper shipper is not supported.", self::EXCEPTION_NOT_SUPPORTED);
         if (!isset($response['status']) || ($response['status'] != 200)) {
             $code = isset($response['status']) ? $response['status'] : 0;
             throw new \UnexpectedValueException("Unexpected server response, code = $code.", self::EXCEPTION_SERVER_ERROR);
@@ -731,6 +734,8 @@ public function getManipulationUnits($shipper) {
 
         $response = $this->call(self::REQUEST_MANIPULATIONUNITS, $shipper);
 
+        if (isset($response['status']) && ($response['status'] == 409))
+            throw new \InvalidArgumentException("The $shipper shipper is not supported.", self::EXCEPTION_NOT_SUPPORTED);
         if (!isset($response['status']) || ($response['status'] != 200)) {
             $code = isset($response['status']) ? $response['status'] : 0;
             throw new \UnexpectedValueException("Unexpected server response, code = $code.", self::EXCEPTION_SERVER_ERROR);
@@ -762,6 +767,8 @@ public function getBranches($shipper, $service = null, $full = false) {
 
         $response = $this->call($full ? self::REQUEST_FULLBRANCHES : self::REQUEST_BRANCHES, $shipper, [], $service);
 
+        if (isset($response['status']) && ($response['status'] == 409))
+            throw new \InvalidArgumentException("The $shipper shipper is not supported.", self::EXCEPTION_NOT_SUPPORTED);
         if (!isset($response['status']) || ($response['status'] != 200)) {
             $code = isset($response['status']) ? $response['status'] : 0;
             throw new \UnexpectedValueException("Unexpected server response, code = $code.", self::EXCEPTION_SERVER_ERROR);
@@ -798,6 +805,8 @@ public function getCountriesForService($shipper) {
 
         $response = $this->call(self::REQUEST_COUNTRIES4SERVICE, $shipper);
 
+        if (isset($response['status']) && ($response['status'] == 409))
+            throw new \InvalidArgumentException("The $shipper shipper is not supported.", self::EXCEPTION_NOT_SUPPORTED);
         if (!isset($response['status']) || ($response['status'] != 200)) {
             $code = isset($response['status']) ? $response['status'] : 0;
             throw new \UnexpectedValueException("Unexpected server response, code = $code.", self::EXCEPTION_SERVER_ERROR);
@@ -830,6 +839,8 @@ public function getZipCodes($shipper, $service, $country = self::COUNTRY_CZECHIA
 
         $response = $this->call(self::REQUEST_ZIPCODES, $shipper, [], "$service/$country");
 
+        if (isset($response['status']) && ($response['status'] == 409))
+            throw new \InvalidArgumentException("The $shipper shipper is not supported.", self::EXCEPTION_NOT_SUPPORTED);
         if (!isset($response['status']) || ($response['status'] != 200)) {
             $code = isset($response['status']) ? $response['status'] : 0;
             throw new \UnexpectedValueException("Unexpected server response, code = $code.", self::EXCEPTION_SERVER_ERROR);
@@ -1305,8 +1316,6 @@ private function call($request, $shipper, array $data = [], $url = null) {
         if (empty($request) || empty ($shipper))
             throw new \InvalidArgumentException('Invalid argument has been entered.');
 
-        //printf("\nRequest: $this->apiUrl/$shipper/$request\n");
-
         $r = curl_init();
         curl_setopt($r, CURLOPT_URL, $url ? "$this->apiUrl/$shipper/$request/$url" : "$this->apiUrl/$shipper/$request");
         curl_setopt($r, CURLOPT_RETURNTRANSFER, true);
@@ -1321,7 +1330,7 @@ private function call($request, $shipper, array $data = [], $url = null) {
         ]);
         $response = curl_exec($r);
         curl_close($r);
-        //var_dump($response);
+
         return json_decode($response, true);
     }
 
diff --git a/test/balikobot.php b/test/balikobot.php
index 04c182b..53d4070 100644
--- a/test/balikobot.php
+++ b/test/balikobot.php
@@ -22,7 +22,15 @@
 if ($testGetters) {
     printf("Shippers & its services\n");
     foreach ($shippers as $itemShippers) {
-        printf("%s: %s\n", $itemShippers, arrayToString($b->getServices($itemShippers)));
+        try {
+            printf("%s: %s\n", $itemShippers, arrayToString($b->getServices($itemShippers)));
+        } catch (\InvalidArgumentException $e) {
+            if ($e->getCode() == Balikobot::EXCEPTION_NOT_SUPPORTED) {
+                printf("%s: %s\n", $itemShippers, 'Not supported');
+            } else {
+                throw $e;
+            }
+        }
     }
     printf("\n\n");
 
@@ -39,19 +47,36 @@
     // shippers + services
     printf("Countries For Service\n");
     foreach ($shippers as $itemShippers) {
-        printf("%s: %s\n", $itemShippers, arrayToString($b->getCountriesForService($itemShippers)));
+        try {
+            printf("%s: %s\n", $itemShippers, arrayToString($b->getCountriesForService($itemShippers)));
+        } catch (\InvalidArgumentException $e) {
+            if ($e->getCode() == Balikobot::EXCEPTION_NOT_SUPPORTED) {
+                printf("%s: %s\n", $itemShippers, 'Not supported');
+            } else {
+                throw $e;
+            }
+        }
     }
     printf("\n\n");
 
     // branches
     printf("Branches\n");
     foreach ($shippers as $itemShippers) {
-        $services = $b->getServices($itemShippers);
-        foreach ($services as $servicesKey => $servicesItem) {
-            try {
-                printf("%s:%s: %s\n", $itemShippers, $servicesKey, arrayToString($b->getBranches($itemShippers, $servicesKey)));
-            } catch (\Exception $e) {
-                printf("\nException: %d: %s\n", $e->getCode(), $e->getMessage());
+        try {
+            $services = $b->getServices($itemShippers);
+
+            foreach ($services as $servicesKey => $servicesItem) {
+                try {
+                    printf("%s:%s: %s\n", $itemShippers, $servicesKey, arrayToString($b->getBranches($itemShippers, $servicesKey)));
+                } catch (\Exception $e) {
+                    printf("\nException: %d: %s\n", $e->getCode(), $e->getMessage());
+                }
+            }
+        } catch (\InvalidArgumentException $e) {
+            if ($e->getCode() == Balikobot::EXCEPTION_NOT_SUPPORTED) {
+                printf("%s: %s\n", $itemShippers, 'Not supported');
+            } else {
+                throw $e;
             }
         }
     }
@@ -60,12 +85,21 @@
     // zip
     printf("Zip\n");
     foreach ($shippers as $itemShippers) {
-        $services = $b->getServices($itemShippers);
-        foreach ($services as $servicesKey => $servicesItem) {
-            try {
-                printf("%s:%s: %s\n", $itemShippers, $servicesKey, arrayToString($b->getZipCodes($itemShippers, $servicesKey)));
-            } catch (\Exception $e) {
-                printf("\nException: %d: %s\n", $e->getCode(), $e->getMessage());
+        try {
+            $services = $b->getServices($itemShippers);
+
+            foreach ($services as $servicesKey => $servicesItem) {
+                try {
+                    printf("%s:%s: %s\n", $itemShippers, $servicesKey, arrayToString($b->getZipCodes($itemShippers, $servicesKey)));
+                } catch (\Exception $e) {
+                    printf("\nException: %d: %s\n", $e->getCode(), $e->getMessage());
+                }
+            }
+        } catch (\InvalidArgumentException $e) {
+            if ($e->getCode() == Balikobot::EXCEPTION_NOT_SUPPORTED) {
+                printf("%s: %s\n", $itemShippers, 'Not supported');
+            } else {
+                throw $e;
             }
         }
     }
@@ -86,7 +120,15 @@
     // manipulation units
     printf("Manipulation units\n");
     foreach ($shippers as $itemShippers) {
-        printf("%s: %s\n", $itemShippers, arrayToString($b->getManipulationUnits($itemShippers)));
+        try {
+            printf("%s: %s\n", $itemShippers, arrayToString($b->getManipulationUnits($itemShippers)));
+        } catch (\InvalidArgumentException $e) {
+            if ($e->getCode() == Balikobot::EXCEPTION_NOT_SUPPORTED) {
+                printf("%s: %s\n", $itemShippers, 'Not supported');
+            } else {
+                throw $e;
+            }
+        }
     }
     printf("\n\n");
 }