- $auth->assert('part_service_assembly_edit | vendor_invoice_edit | sales_order_edit | invoice_edit |' .
- 'request_quotation_edit | sales_quotation_edit | purchase_order_edit');
+ $auth->assert('part_service_assembly_edit | vendor_invoice_edit | sales_order_edit | invoice_edit |' .
+ 'request_quotation_edit | sales_quotation_edit | purchase_order_edit | '.
+ 'purchase_delivery_order_edit | sales_delivery_order_edit');