diff --git a/src/main/java/ru/nbch/credit_tracker/service/scoring/AuthorizationService.java b/src/main/java/ru/nbch/credit_tracker/service/scoring/AuthorizationService.java
index 7c3f1f0..428de8a 100644
--- a/src/main/java/ru/nbch/credit_tracker/service/scoring/AuthorizationService.java
+++ b/src/main/java/ru/nbch/credit_tracker/service/scoring/AuthorizationService.java
@@ -26,6 +26,9 @@ public class AuthorizationService {
     }
 
     public AuthResult findAuthInfo(String userId, String password) throws Exception {
+        if (userId.length() > 12) {
+            return new AuthResult(false, SignalError.ERROR_005);
+        }
         String hashedPassword = hashPassword(password);
         List<String> productCodes = mapper.findUserProductCodes(userId, hashedPassword);
         if (productCodes.isEmpty()) {