NFE-880
Rejeição: Percentual de FCP igual a zero [nItem: …].
In English The FCP rate (pFCP) is zero; leave the FCP fields out for products not subject to it.
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
not($icms/nfe:pFCP) or br:dec($icms/nfe:pFCP) != 0
Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol