NFE-856
Rejeição: Campo valor de partida não preenchido para produto GLP [nItem: …].
In English An LPG item needs the starting value (vPart).
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($glp) or $comb/nfe:vPart
Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol