Stripe's metadata Quaderno can use

Stripe's metadata Quaderno can use
Type of transaction: eserviceebooksaas, standardreduced, exempt, consulting. The default is the type of transaction you’ve selected in your Preferences page.
Unique code of the product or service sold.
Name of the tax, e.g Sales Tax, VAT, GST, etc.
Value of the tax rate, e.g. 20 for a tax rate of 20%.
IP address of the customer
PO number
Any note you want to add to the final invoice
Tag invoices when they are created e.g. tag1,tag2,tag3