NFE-630
Rejeição: Valor do Produto difere do produto Valor Unitário de Tributação e Quantidade Tributável [nItem: …] (vProd …, qTrib × vUnTrib …).
In English In a normal NF-e the item's vProd is not qTrib × vUnTrib rounded to two decimals (R$ 0.01 tolerance).
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
nfe:infNFe/nfe:det
$fin != '1' or br:product($prod/nfe:vProd, br:dec($prod/nfe:qTrib) * br:dec($prod/nfe:vUnTrib))
Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol