diff --git a/app/Http/Controllers/ObdController.php b/app/Http/Controllers/ObdController.php
index 7fb04f8fe..07ca533d7 100644
--- a/app/Http/Controllers/ObdController.php
+++ b/app/Http/Controllers/ObdController.php
@@ -126,7 +126,7 @@ class ObdController extends Controller
                     continue;
                 }
 
-                $mandatoryFields = ['vehicle_number', 'bundle_number', 'picked_weight', 'scanned_by'];
+                $mandatoryFields = ['vehicle_number', 'bundle_number', 'heat_number', 'picked_weight', 'scanned_by'];
                 $missingFields = [];
 
                 foreach ($mandatoryFields as $field)