diff --git a/apps/web/src/components/config/ApiKeysCardEditor.tsx b/apps/web/src/components/config/ApiKeysCardEditor.tsx
index 43dad11a6..f902bbcf5 100644
--- a/apps/web/src/components/config/ApiKeysCardEditor.tsx
+++ b/apps/web/src/components/config/ApiKeysCardEditor.tsx
@@ -6,7 +6,7 @@ import {
   usageServiceApi,
   type ApiKeyAlias,
 } from '@/services/api/usageService';
-import { useAuthStore, useNotificationStore } from '@/stores';
+import { useAuthStore, useConfigStore, useNotificationStore } from '@/stores';
 import { usePanelFeatureAvailability } from '@/hooks/usePanelFeatureAvailability';
 import { copyToClipboard } from '@/utils/clipboard';
 import { maskApiKey } from '@/utils/format';
@@ -33,6 +33,7 @@ export const ApiKeysCardEditor = memo(function ApiKeysCardEditor({
   const showNotification = useNotificationStore((state) => state.showNotification);
   const showConfirmation = useNotificationStore((state) => state.showConfirmation);
   const managementKey = useAuthStore((state) => state.managementKey);
+  const savedApiKeys = useConfigStore((state) => state.config?.apiKeys);
   const featureAvailability = usePanelFeatureAvailability();
   const apiKeys = useMemo(
     () =>
@@ -459,7 +460,18 @@ export const ApiKeysCardEditor = memo(function ApiKeysCardEditor({
         activeApiKeyHashes,
         cleanupDecision.allowOrphanAliasCleanup
       );
-      showNotification(t('config_management.visual.api_keys.alias_saved'), 'success');
+      const editingKeyHash = getApiKeyHash(editingKey);
+      const savedHashSet = new Set(
+        (savedApiKeys ?? []).map((k) => getApiKeyHash(k))
+      );
+      if (editingKeyHash && !savedHashSet.has(editingKeyHash)) {
+        showNotification(
+          t('config_management.visual.api_keys.alias_saved_key_not_in_cpa'),
+          'warning'
+        );
+      } else {
+        showNotification(t('config_management.visual.api_keys.alias_saved'), 'success');
+      }
       closeAliasModal();
     } catch (error) {
       setAliasFormError(getAliasErrorMessage(error));
diff --git a/apps/web/src/i18n/locales/en.json b/apps/web/src/i18n/locales/en.json
index 723dd82e3..fcaaf4232 100644
--- a/apps/web/src/i18n/locales/en.json
+++ b/apps/web/src/i18n/locales/en.json
@@ -2559,6 +2559,7 @@
         "alias_action": "Set Alias",
         "alias_title": "Set API Key Alias",
         "alias_saved": "API key alias saved",
+        "alias_saved_key_not_in_cpa": "Alias saved, but this key is not in the active CPA api-keys list yet. Add it to API Keys and save the configuration before clients can use it.",
         "alias_deleted": "API key alias deleted",
         "alias_delete": "Delete Alias",
         "alias_delete_title": "Delete API Key Alias",
diff --git a/apps/web/src/i18n/locales/ru.json b/apps/web/src/i18n/locales/ru.json
index 72d69f5b3..b36ea8e77 100644
--- a/apps/web/src/i18n/locales/ru.json
+++ b/apps/web/src/i18n/locales/ru.json
@@ -2559,6 +2559,7 @@
         "alias_action": "Задать псевдоним",
         "alias_title": "Псевдоним API-ключа",
         "alias_saved": "Псевдоним API-ключа сохранён",
+        "alias_saved_key_not_in_cpa": "Псевдоним сохранён, но этот ключ ещё не добавлен в список api-keys CPA. Добавьте ключ в API Keys и сохраните конфигурацию, чтобы клиенты могли его использовать.",
         "alias_deleted": "Псевдоним API-ключа удалён",
         "alias_delete": "Удалить псевдоним",
         "alias_delete_title": "Удалить псевдоним API-ключа",
diff --git a/apps/web/src/i18n/locales/zh-CN.json b/apps/web/src/i18n/locales/zh-CN.json
index 2790eeff4..48d00b31e 100644
--- a/apps/web/src/i18n/locales/zh-CN.json
+++ b/apps/web/src/i18n/locales/zh-CN.json
@@ -2559,6 +2559,7 @@
         "alias_action": "设置别名",
         "alias_title": "设置 API Key 别名",
         "alias_saved": "API Key 别名已保存",
+        "alias_saved_key_not_in_cpa": "别名已保存，但此密钥尚未添加到 CPA 的 api-keys 列表中。请先将密钥添加到 API Keys 并保存配置，否则客户端无法使用。",
         "alias_deleted": "API Key 别名已删除",
         "alias_delete": "删除别名",
         "alias_delete_title": "删除 API Key 别名",
diff --git a/apps/web/src/i18n/locales/zh-TW.json b/apps/web/src/i18n/locales/zh-TW.json
index e23306589..c629b9f20 100644
--- a/apps/web/src/i18n/locales/zh-TW.json
+++ b/apps/web/src/i18n/locales/zh-TW.json
@@ -2559,6 +2559,7 @@
         "alias_action": "設定別名",
         "alias_title": "設定 API Key 別名",
         "alias_saved": "API Key 別名已保存",
+        "alias_saved_key_not_in_cpa": "別名已儲存，但此金鑰尚未加入 CPA 的 api-keys 清單中。請先將金鑰加入 API Keys 並儲存設定，否則客戶端無法使用。",
         "alias_deleted": "API Key 別名已刪除",
         "alias_delete": "刪除別名",
         "alias_delete_title": "刪除 API Key 別名",