ATCUD: Full Index

The unique document code (ATCUD) is a code that identifies a document, regardless of its issuer, document type or the sequence used. 🔢

📚 Find out everything here

1. Step by Step Guide to Create and Register Sequences
2. How to register an existing sequence?
3. Received an error when registering the sequence?
4. What does the ATCUD consist of?
5. ATCUD: What changed regarding document issuance?
6. When did it come into effect?
7. Which documents must include the ATCUD?
8. What happens if I don't register a sequence?
9. How does data synchronization with the Tax Authority work?
10. What do the sequence registration statuses mean?

💬 Frequently asked questions

❓ What is the ATCUD?

The ATCUD is the unique document code that identifies a document, regardless of its issuer, document type or the sequence used.

❓ Where do I start if I want to register a sequence?

Start with the Step by Step Guide to Create and Register Sequences.

❓ Where can I find the full list of ATCUD articles?

You can find them all in the list above, from the step-by-step guide to the articles on statuses, synchronization and the Tax Authority.