The Romanian specification for the electronic invoice, based on the European EN 16931 standard. Every SPV invoice is validated automatically against these rules.

What are the most common CIUS-RO errors?

VAT not matching the taxable base, invalid unit-of-measure codes, wrongly formatted tax IDs, missing mandatory fields and totals that don't add up.

Can I validate the invoice before sending it?

Yes, and it's recommended. Local validation against the CIUS-RO schema catches errors before submission. Azuvio does this automatically for every invoice.

How do I reduce the rejection rate?

Through automatic validation before submission. Azuvio flags the exact wrong field and sends only valid documents to SPV.

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ANAF · 7 min

CIUS-RO validation in e-Factura: rules and how to pass them

CIUS-RO is the Romanian specification for the electronic invoice (based on the European EN 16931 standard). Every invoice sent to SPV goes through automatic validations against these rules — if it doesn't comply, it's rejected.

This guide explains what CIUS-RO validates, the most common errors and how to eliminate them upfront.

How to pass CIUS-RO validation

Understand what CIUS-RO validates
The rules check the XML structure, mandatory fields, VAT-rate consistency, unit and country codes, and total correlations. It's a syntactic and business validation, not just a format check.
The most common errors
VAT not matching the taxable base, invalid unit-of-measure codes, wrongly formatted tax IDs, missing mandatory fields and totals that don't add up. Most are data errors, not system errors.
Validate before submission
Don't send 'blindly' to SPV. Validate the XML locally against the CIUS-RO schema before submission, to catch errors without burning rejection cycles at ANAF.
Automatic validation in Azuvio
Azuvio validates every invoice against CIUS-RO rules before submission, flags the exact problematic field and sends only clean documents to SPV, with status tracking. The rejection rate drops to practically zero.

Bottom line

CIUS-RO isn't an obstacle if you validate before submission. Automatic validation catches data errors at the source and makes submission a predictable process.

Last updated: 2026-07-07

Frequently asked

What is CIUS-RO?: The Romanian specification for the electronic invoice, based on the European EN 16931 standard. Every SPV invoice is validated automatically against these rules.
What are the most common CIUS-RO errors?: VAT not matching the taxable base, invalid unit-of-measure codes, wrongly formatted tax IDs, missing mandatory fields and totals that don't add up.
Can I validate the invoice before sending it?: Yes, and it's recommended. Local validation against the CIUS-RO schema catches errors before submission. Azuvio does this automatically for every invoice.
How do I reduce the rejection rate?: Through automatic validation before submission. Azuvio flags the exact wrong field and sends only valid documents to SPV.