BR-IC-10 An intra-community VAT breakdown must give the matching exemption reason

"vatExemptionReasons": { "K": "Intra-Community supply" }

{
  "rule": "BR-IC-10",
  "field": [
    "BT-120",
    "BT-121"
  ],
  "severity": "fatal",
  "message": "The VAT breakdown for category K (Intra-community supply) must have a VAT exemption reason code (BT-121) meaning \"Intra-Community supply\", or the VAT exemption reason text (BT-120) \"Intra-Community supply\" (or the equivalent standard text in another language). You set vatExemptionReasons.K to an empty value, which suppresses the wording this library would otherwise supply. The reason is what tells the buyer — and their auditor — why an invoice line carries no VAT; a zero with no explanation is indistinguishable from a mistake.",
  "fix": "Either remove vatExemptionReasons.K entirely, in which case this library supplies the standard text \"Intra-Community supply\", or set it to your own wording in the invoice language.",
  "example": "\"vatExemptionReasons\": { \"K\": \"Intra-Community supply\" }",
  "xpath": "/ubl:Invoice/cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cbc:TaxExemptionReason",
  "docsUrl": "https://attestwire.com/rules/BR-IC-10"
}