app/Filament/Resources/ProcessOrderResource.php

@@ -132,8 +132,9 @@ class ProcessOrderResource extends Resource
                         $set('machine_name', null);
                         if (! $plantId) {
                             $set('poPlantError', 'Please select a plant first.');
-                            $set('sfgNumberError', null);
+                            $set('process_order', null);
                             $set('coilNumberError', null);
+                            $set('sfgNumberError', null);
                         }
                     })
                     ->required(),