diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9008b43..596c71e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 2023-10-02 4.6.12
+* Added currency validation when configuring the module
+
 ## 2023-08-31 4.6.11
 * Added the ability to work with coupons through the CRM system
 
diff --git a/Makefile b/Makefile
index e3a8fed..1faab50 100644
--- a/Makefile
+++ b/Makefile
@@ -40,7 +40,7 @@ local_test:
 run_tests:
 	docker-compose --no-ansi up -d --build mysql
 	docker-compose --no-ansi run --rm --no-deps app make local_test
-	docker-compose stop
+	docker-compose down -v
 
 coverage:
 	wget https://phar.phpunit.de/phpcov-2.0.2.phar && php phpcov-2.0.2.phar merge coverage/ --clover coverage.xml
diff --git a/VERSION b/VERSION
index 4381da6..42c7f00 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.6.11
\ No newline at end of file
+4.6.12
\ No newline at end of file
diff --git a/resources/pot/retailcrm-es_ES.pot b/resources/pot/retailcrm-es_ES.pot
index fb4510f..19988df 100644
--- a/resources/pot/retailcrm-es_ES.pot
+++ b/resources/pot/retailcrm-es_ES.pot
@@ -437,4 +437,10 @@ msgid "Select warehouses to receive balances from CRM. To select several warehou
 msgstr "Selecciona los almacenes para recibir el stock desde CRM. Para seleccionar varios mantén pulsado CTRL (para Windows y Linux) o ⌘ Command (para MacOS)"
 
 msgid "I agree to receive promotional newsletters"
-msgstr "Estoy de acuerdo en recibir los boletines informativos"
\ No newline at end of file
+msgstr "Estoy de acuerdo en recibir los boletines informativos"
+
+msgid "API key with one-shop access required"
+msgstr "Se requiere clave API con acceso a una tienda"
+
+msgid "The currency of the site differs from the currency of the store in CRM. For the integration to work correctly, the currencies in CRM and CMS must match"
+msgstr "La moneda del sitio web es distinto a la tienda del CRM. Para el funcionamiento correcto de la integración, las monedas del CMS y CRM deben coincid"
\ No newline at end of file
diff --git a/resources/pot/retailcrm-ru_RU.pot b/resources/pot/retailcrm-ru_RU.pot
index 9c4d653..8d45170 100644
--- a/resources/pot/retailcrm-ru_RU.pot
+++ b/resources/pot/retailcrm-ru_RU.pot
@@ -447,3 +447,9 @@ msgstr "Выберите склады для получения остатков
 
 msgid "I agree to receive promotional newsletters"
 msgstr "Согласен на рекламно-информационные рассылки"
+
+msgid "API key with one-shop access required"
+msgstr "Требуется API ключ с доступом к одному магазину"
+
+msgid "The currency of the site differs from the currency of the store in CRM. For the integration to work correctly, the currencies in CRM and CMS must match"
+msgstr "Валюта сайта отличается от валюты магазина в CRM. Для корректной работы интеграции, валюты в CRM и CMS должны совпадать"
diff --git a/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php b/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php
index 076ae69..cadf1ef 100644
--- a/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php
+++ b/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php
@@ -72,7 +72,6 @@ abstract class WC_Retailcrm_Abstracts_Settings extends WC_Integration
         <?php
     }
 
-
     /**
      * Initialize integration settings form fields.
      */
@@ -98,6 +97,11 @@ abstract class WC_Retailcrm_Abstracts_Settings extends WC_Integration
         ];
 
         if ($this->apiClient) {
+            // The field is highlighted in red if the CRM site is invalid
+            $this->form_fields['api_key']['class'] = $this->isValidCrmSite($this->apiClient)
+            ? ''
+            : 'red-selected-retailcrm';
+
             if (
                 isset($_GET['page']) && $_GET['page'] == 'wc-settings'
                 && isset($_GET['tab']) && $_GET['tab'] == 'integration'
@@ -816,20 +820,48 @@ abstract class WC_Retailcrm_Abstracts_Settings extends WC_Integration
             return $value;
         }
 
-        $api = new WC_Retailcrm_Proxy($this->crmUrl, $value);
-        $response = $api->apiVersions();
+        $isValidCrmSite = $this->isValidCrmSite(new WC_Retailcrm_Proxy($this->crmUrl, $value));
 
-        if (empty($response) || !$response->isSuccessful()) {
-            $value = '';
+        // The field is highlighted in red if the CRM site is invalid
+        if ($isValidCrmSite) {
+            $this->form_fields['api_key']['class'] = '';
 
-            WC_Admin_Settings::add_error(esc_html__('Enter the correct API key', 'retailcrm'));
-        } else {
             header("Refresh:0");
+        } else {
+            $value = '';
+            $this->form_fields['api_key']['class'] = 'red-selected-retailcrm';
         }
 
         return $value;
     }
 
+    private function isValidCrmSite($api)
+    {
+        $errorMessage = '';
+        $isValidCrmSite = true;
+        $response = $api->sitesList();
+
+        if (empty($response['sites']) || !$response->isSuccessful()) {
+            $errorMessage = 'Enter the correct API key';
+            $isValidCrmSite = false;
+        } elseif (count($response['sites']) > 1)  {
+            $errorMessage = 'API key with one-shop access required';
+            $isValidCrmSite = false;
+        } else {
+            $site = current($response['sites']);
+
+            if (get_woocommerce_currency() !== $site['currency']) {
+                $errorMessage = 'The currency of the site differs from the currency of the store in CRM. For the integration to work correctly, the currencies in CRM and CMS must match';
+                $isValidCrmSite = false;
+            }
+        }
+
+        if ('' !== $errorMessage) {
+            WC_Admin_Settings::add_error(esc_html__($errorMessage, 'retailcrm'));
+        }
+
+        return $isValidCrmSite;
+    }
 
     /**
      * Validate whatsapp phone number
diff --git a/src/languages/retailcrm-es_ES.mo b/src/languages/retailcrm-es_ES.mo
index 082c4b3..30154f7 100644
Binary files a/src/languages/retailcrm-es_ES.mo and b/src/languages/retailcrm-es_ES.mo differ
diff --git a/src/languages/retailcrm-ru_RU.mo b/src/languages/retailcrm-ru_RU.mo
index f8c2000..4249a72 100644
Binary files a/src/languages/retailcrm-ru_RU.mo and b/src/languages/retailcrm-ru_RU.mo differ
diff --git a/src/readme.txt b/src/readme.txt
index 1ba4236..4bdb502 100644
--- a/src/readme.txt
+++ b/src/readme.txt
@@ -5,7 +5,7 @@ Tags: Интеграция, Simla.com, simla
 Requires PHP: 7.0
 Requires at least: 5.3
 Tested up to: 6.2
-Stable tag: 4.6.11
+Stable tag: 4.6.12
 License: GPLv1 or later
 License URI: http://www.gnu.org/licenses/gpl-1.0.html
 
@@ -82,6 +82,9 @@ Asegúrate de tener una clave API específica para cada tienda. Las siguientes i
 
 
 == Changelog ==
+= 4.6.12 =
+* Added currency validation when configuring the module
+
 = 4.6.11 =
 * Added the ability to work with coupons through the CRM system
 
diff --git a/src/retailcrm.php b/src/retailcrm.php
index c55b08e..2df76ce 100644
--- a/src/retailcrm.php
+++ b/src/retailcrm.php
@@ -5,7 +5,7 @@
  * Description: Integration plugin for WooCommerce & Simla.com
  * Author: RetailDriver LLC
  * Author URI: http://retailcrm.pro/
- * Version: 4.6.11
+ * Version: 4.6.12
  * Tested up to: 6.2
  * WC requires at least: 5.4
  * WC tested up to: 7.8
diff --git a/src/uninstall.php b/src/uninstall.php
index dab4ce7..f5aac42 100644
--- a/src/uninstall.php
+++ b/src/uninstall.php
@@ -16,7 +16,7 @@
  *
  * @link       https://wordpress.org/plugins/woo-retailcrm/
  *
- * @version    4.6.11
+ * @version    4.6.12
  *
  * @package    RetailCRM
  */
diff --git a/tests/datasets/data-base-retailcrm.php b/tests/datasets/data-base-retailcrm.php
index b8e3f78..048ec2a 100644
--- a/tests/datasets/data-base-retailcrm.php
+++ b/tests/datasets/data-base-retailcrm.php
@@ -164,4 +164,12 @@ class DataBaseRetailCrm
             ]
         ];
     }
+
+    public static function getResponseSitesList()
+    {
+        return [
+            'success' => true,
+            'sites' => ['woocommerce' => ['currency' => 'RUB']],
+        ];
+    }
 }
diff --git a/tests/test-wc-retailcrm-base.php b/tests/test-wc-retailcrm-base.php
index 5b1e774..aa280df 100644
--- a/tests/test-wc-retailcrm-base.php
+++ b/tests/test-wc-retailcrm-base.php
@@ -32,6 +32,7 @@ class WC_Retailcrm_Base_Test extends WC_Retailcrm_Test_Case_Helper
             ->disableOriginalConstructor()
             ->setMethods(
                 [
+                    'sitesList',
                     'storesList',
                     'orderMethodsList',
                     'deliveryTypesList',
@@ -50,6 +51,7 @@ class WC_Retailcrm_Base_Test extends WC_Retailcrm_Test_Case_Helper
         $this->setMockStatuses();
         $this->setMockCustomFields();
         $this->setMockStoresList();
+        $this->setMockSitesList();
 
         $_GET['page'] = 'wc-settings';
         $_GET['tab'] = 'integration';
@@ -272,7 +274,6 @@ class WC_Retailcrm_Base_Test extends WC_Retailcrm_Test_Case_Helper
         ob_end_clean();
     }
 
-
     public function test_initialize_whatsapp()
     {
         ob_start();
@@ -426,6 +427,19 @@ class WC_Retailcrm_Base_Test extends WC_Retailcrm_Test_Case_Helper
         $this->responseMockStoresList->setResponse(DataBaseRetailCrm::getResponseStoreList());
         $this->setMockResponse($this->apiMock, 'storesList', $this->responseMockStoresList);
     }
+    private function setMockSitesList()
+    {
+        $this->responseMockStoresList = $this
+            ->getMockBuilder('\WC_Retailcrm_Response_Helper')
+            ->disableOriginalConstructor()
+            ->setMethods(['isSuccessful'])
+            ->getMock();
+
+        $this->setMockResponse($this->responseMockStoresList, 'isSuccessful', true);
+
+        $this->responseMockStoresList->setResponse(DataBaseRetailCrm::getResponseSitesList());
+        $this->setMockResponse($this->apiMock, 'storesList', $this->responseMockStoresList);
+    }
 
     private function setMockOrderMethods()
     {