diff --git a/package.json b/package.json
index 5c56b96..b42b60e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ipwhitelist",
-  "version": "0.6.9",
+  "version": "0.6.10",
   "description": "IP WhiteList microservice for cloud provider",
   "main": "server.js",
   "scripts": {
diff --git a/v2/src/db/queries.js b/v2/src/db/queries.js
index bcde74a..1fffcb5 100644
--- a/v2/src/db/queries.js
+++ b/v2/src/db/queries.js
@@ -30,6 +30,7 @@ const { overlaps } = require('../validators');
  * Атомарный upsert — исключает дубли при параллельных запросах.
  */
 async function getOrCreateCompany(clientId, companyName) {
+  if (!clientId || !String(clientId).trim()) throw new Error('DB: clientId не может быть пустым');
   const res = await pool.query(
     `INSERT INTO companies (client_id, name) VALUES ($1, $2)
      ON CONFLICT (client_id) DO UPDATE SET name = COALESCE(companies.name, EXCLUDED.name)