You can use the invoicing function Create Tax Notification to process source documents of the source document category TAXN (tax items for tax notification).

The invoicing function processes invoicing orders that are created when reporting data is recorded for the tax on sales and purchases code. By creating a tax notification, you can list tax information of individual invoices in an additional document. This tax notification shows taxes for purely informational purposes. It can only be created dependent on a tax on sales/purchases return. The system already posts the tax when the individual invoices are created.