Add tax to submitted invoice

Hi every one,
Is there any chance that I can add VAT into a submitted Purchase Invoice without amending it or touching SQL?

Unfortunately, there is no direct way to modify a submitted Purchase Invoice without amending it in ERPNext. The system is designed to maintain data integrity by locking documents once they are submitted.

You may consider recording the VAT separately using a journal entry. This might allow you to adjust your accounting without modifying the original Purchase Invoice