Validate FatturaPA before sending it to the SDI

Upload the XML file: the validator checks it against the official schema 1.2.3 and the SDI content controls that can be run without the SDI, with the SDI error code on every finding.

This page in: Italiano

What is checked

FatturaPA XML Schema 1.2.3 by Agenzia delle Entrate (FPR12 and FPA12).
The content controls of Allegato A 1.9.1 that can be checked offline (SDI codes 00400–00477), in our implementation.
Not checked here: file name, signature, duplicates and register checks, which only the SDI can do.
Every finding with code, severity, message and location in the XML.

Rule sets used

Rule set	Published by	Version
FatturaPA (XML schema, SDI controls)	Agenzia delle Entrate	1.2.3

Every rule explained

Every finding in the result links to a page with the official rule text, the severity per rule set and the technical test. The rules of this page:

SDI 29
Checks of this API 3

All 3289 validation rules

Automate the check

The same validator as a REST API: one call with your API key, the result as JSON. The Free plan includes 100 documents a month.

Get a free API key

curl -H "Authorization: Bearer $API_KEY" \
     -H "Content-Type: application/xml" \
     --data-binary @fattura.xml \
     "https://einvoice-api-main-f5141d8.zuplo.app/v1/validate"

Privacy

The file is sent encrypted through our API gateway (Zuplo) to our server in Germany, checked in memory only and discarded after the response. It is neither stored nor logged. To count the validations per day, the gateway uses your IP address; the counter expires after 24 hours. This page sets no cookies. Where you can, use test or anonymised invoices. Details in the privacy policy (German).

Frequently asked questions

Is the validator free?

Yes. You can validate 5 files a day without signing up. For more documents and for validating inside your own software there is the API, with a free plan too (100 documents a month).

Are my invoices stored?

No. The file is checked in memory only, on servers in Germany, and discarded after the response. It never reaches a disk or a log.

Is the result binding?

The validator uses the official rule sets in the version in force and names them in the result. Whether a recipient or a platform accepts the invoice is up to them. Not legal or tax advice.

Does the validator send my invoice?

No. It only validates. Sending through Peppol, the SDI, KSeF or a platform is up to your provider.