fatalEN 16931syntax binding ruleCII
Only one TaxPointDate shall be present
An element that EN 16931 allows at most once appears more than once: Only one TaxPointDate shall be present
Keep the single correct occurrence and delete the rest. If you genuinely have several values, they belong in a repeatable group, not in repeated elements.
CII — context /rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeSettlement
count(ram:ApplicableTradeTax/ram:TaxPointDate) <= 1