Invoice reference and UUID checker

Check the structure and, where implemented, checksum of common fiscal invoice references such as UUID, IRN, CUFE and access keys.

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Invoice reference and UUID checker

Check the structure and, where implemented, checksum of common fiscal invoice references such as UUID, IRN, CUFE and access keys.

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Select countryInvoice number / UUID / IRN / CUFE

Methodology

Invoice reference and UUID checker · Argentina

Check common fiscal invoice references such as UUID, IRN, CUFE and Brazilian access keys. Where a documented checksum is implemented, the tool separates checksum success from live authority status.

What the tool checks

Reference length and alphabet
Standard UUID syntax
National check digit where configured
Likely reference family

What it cannot confirm

Technical check only

No authority status is queried
A structurally valid reference can still be cancelled, rejected or unrelated

Requirements Official sources