Update a VAT rate description
VAT Rates
Update VAT Rate
Update the description of a firm VAT rate.
PUT
Update a VAT rate description
Overview
Onlydescription is mutable. percent is immutable — changing it would
silently invalidate every bill line that already references this rate and
break the historical audit trail.
To replace a rate with a new percent, add a new rate and migrate referencing
invoices manually.