← Back to guides ANAF · 8 mine-Factura validation errors in SPV: causes and step-by-step fixes A rejected invoice in SPV means wasted time, a deadline that keeps running, and a customer who never gets the document. The good news: almost all errors are predictable and repetitive. This guide walks through the most common CIUS-RO validation errors, how to read the error code ANAF returns, and how to eliminate them with automatic pre-submission validation. How to fix validation errorsTop 10 common validation errorsThe most frequent: invalid tax ID/CUI or missing RO prefix where required, VAT rate inconsistent with the category, line amounts not matching the total, non-compliant unit of measure, missing/wrong issue date, mandatory CIUS-RO fields left blank.How to read the SPV error messageANAF returns a code and description for every rejection. The code points to the exact field and rule broken. Don't resubmit blindly — read the rule, fix the source in your ERP/billing, then regenerate the XML.Correcting and resubmitting properlyFix the data at the source (not directly in the XML), regenerate the invoice and resubmit. If the invoice was already accepted and wrong, use a credit note or correction invoice — not a plain resubmission.Validate automatically before ANAFAzuvio runs CIUS-RO validation locally, before submission: it checks XML structure, mandatory fields, amount/VAT coherence and CUI format. Invoices only reach ANAF once they pass the rules — the rejection rate drops to near zero. Bottom line Validation errors aren't inevitable. With automatic validation at the source, most rejections disappear before the invoice ever reaches ANAF. Last updated: 2026-07-07 Frequently askedWhy does ANAF reject my invoices?Most often: invalid CUI, non-compliant VAT rate, amounts not matching between lines and total, or mandatory CIUS-RO fields left blank. Each rejection has a code pointing to the broken rule.Should I edit the XML file directly?No. Fix the data at the source (in billing/ERP), regenerate the XML and resubmit. Editing the XML by hand introduces new errors.How do I prevent rejections?Run CIUS-RO validation before submission. Azuvio checks structure and data coherence locally and only sends invoices that already pass the rules.What if the rejected invoice was already delivered to the customer?Correct and resubmit if it wasn't accepted. If an accepted invoice is wrong, use a credit note or correction invoice, not a simple resubmission. Related glossary termse-Factura (RO e-Invoice)e-Factura 2026SPV (Virtual Private Space) Where Azuvio fitsConformitate fiscală ANAFConectori ERP Related guidese-Factura submission deadline 2026: the 5 working days, explainede-Factura vs e-Transport vs SAF-T: the differences and what applies