diff --git a/pandora_console/godmode/users/configure_user.php b/pandora_console/godmode/users/configure_user.php
index 210d7e0945..808261ef61 100644
--- a/pandora_console/godmode/users/configure_user.php
+++ b/pandora_console/godmode/users/configure_user.php
@@ -384,6 +384,8 @@ if ($create_user === true) {
 
     // Generate new API token.
     $values['api_token'] = api_token_generate();
+    // Validate the user ID if it already exists.
+    $user_exists = get_user_info($id);
 
     if (empty($id) === true) {
         ui_print_error_message(__('User ID cannot be empty'));
@@ -392,6 +394,13 @@ if ($create_user === true) {
         $password_new = '';
         $password_confirm = '';
         $new_user = true;
+    } else if (isset($user_exists['id_user'])) {
+        $is_err = true;
+        ui_print_error_message(__('User ID already exists'));
+        $user_info = $values;
+        $password_new = '';
+        $password_confirm = '';
+        $new_user = true;
     } else if (preg_match('/^\s+|\s+$/', io_safe_output($id))) {
         ui_print_error_message(__('Invalid user ID: leading or trailing blank spaces not allowed'));
         $is_err = true;