NFE-685
Rejeição: Total do Valor Aproximado dos Tributos difere do somatório dos itens (vTotTrib …, itens …).
In English The approximate taxes total (vTotTrib) is not the sum of the items' (missing values count as zero).
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:total
br:dec($t/nfe:vTotTrib) = br:sum($det/nfe:imposto/nfe:vTotTrib)
Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol