{"data":{"slug":"invoice-vat-breakdown-not-single-rate","type":"https://api.spendone.tech/problems/invoice-vat-breakdown-not-single-rate","status":422,"title":"Invoice VAT Breakdown Is Not Single Rate","description":"This invoice states more than one VAT rate, so it has no single document rate to correct. Correct the rate on the line items instead.","modules":["invoices"]}}