.

backend/app/Http/Controllers/Api/ChildrenController.php

@@ -144,7 +144,7 @@ class ChildrenController extends Controller {
         });
 
         $validate = Validator::make($r->all(), [
-            'identity' => 'required|max:20|alpha_num',
+            'identity' => 'required|max:20|numeric',
             'email' => 'required|unique:children|max:255|email',
             'password' => ['required', 'min:8', 'max:72', 'confirmed', new \App\Rules\Hankaku],
             'last_name' => 'required|max:100',
@@ -552,7 +552,7 @@ class ChildrenController extends Controller {
             'tel' => 'required|numeric|starts_with:0|tel_size',
             'last_name' => 'required|max:100',
             'first_name' => 'required|max:100',
-            'identity' => 'required|max:20|alpha_num',
+            'identity' => 'required|max:20|numeric',
             'company' => 'max:100',
         ]);