BR-DEC-20 The invoice total without VAT, at two decimals
The invoice total without VAT must carry at most two decimals.
- Business term
BT-109
You cannot trip this rule. It constrains a figure this library computes for you rather than one it reads from your invoice, so no input reaches it.
Every computed amount goes through the same rounding helper before it is written, so the decimal count is fixed at two by construction. If this rule ever does fire, it is a
defect in @attestwire/en16931 and not in your invoice.
Send it to
hello@attestwire.com
rather than changing your data to work around it.
Why there is no error payload here
Every other page in this reference carries the exact
TeachingError the library returns, harvested by running it
at build time. This one cannot: the rule guards a figure the library
computes rather than one it reads, so there is no invoice that produces
the object. Publishing an invented one would break the only promise the
reference makes.
The rule is implemented, and it runs on every document. It is an assertion about our arithmetic, kept so that a regression in the totals is caught here rather than by a tax authority.