diff --git a/app/Filament/Resources/PanelBoxValidationResource.php b/app/Filament/Resources/PanelBoxValidationResource.php
index 05d5ed5..3f4f89f 100644
--- a/app/Filament/Resources/PanelBoxValidationResource.php
+++ b/app/Filament/Resources/PanelBoxValidationResource.php
@@ -581,10 +581,10 @@ class PanelBoxValidationResource extends Resource
                             $itemCode = $panelBoxCode;
                             $serialNumber = $panelBoxSerialNo;
 
-                            if (strlen($serialNumber) > 28) {
+                            if (strlen($serialNumber) > 30) {
                                 Notification::make()
                                     ->title('Invalid Serial Number')
-                                    ->body("Serial number cannot be greater than 28 characters. Current length: " . strlen($panelBoxSerialNo))
+                                    ->body("Serial number cannot be greater than 30 characters. Current length: " . strlen($panelBoxSerialNo))
                                     ->danger()
                                     ->send();