When I try to validate a VAT code of the form LV 12016******, the code returns the result of invalid.
When I check the same number on the European Commission website (https://ec.europa.eu/taxation_customs/vies/vieshome.do) it is in fact valid.
ValidatorLV.php checks if the first digit is greater than 3, and returns false otherwise (which is the case here). I propose to remove this condition, which seems to be outdated.