Guide to communicating invoicing series (ATCUD)

Asof January 1, 2023, Portuguese companies are required to include a unique document code, theATCUD, in tax-related documents.

It is now necessary for the invoicing series to be communicated and validated with the Tax Authority so that the ATCUD for each document can be generated by the certified invoicing software integrated with 3cket.

Each promoter will need to enter the necessary credentials in the 3cket back office. This process is done only once and allows the series to be automatically validated at the time the event is created.

⚠️ This step is required to createpaid tickets. Free events are not subject to this requirement.

🔗 See more information about ATCUD on the Finance Portal

1. Create a user account on the Finance Portal

  1. Log in tothe Finance Portalusing your company credentials.
  2. Search for"user management" and select "create new user."
  3. Setyour usernameand a secure, randompassword.
  4. Authorize theWSE operation– Communication and Series Management via Web Service.
  5. Select "Submit."

⚠️ The password must beless than 16 characters long.

After creation, theuser number is displayed on the screen.

This number and the password you set are the credentials you need to enter in the back office.

AT

2. Enter the data into the back office

  1. Go tothe Organizer section>Manage Organizer>Billing ( SAF-T and ATCUD).
  2. Enter theusernameandpasswordyou created on the Finance Portal.
  3. Save and wait forthe green notification, which confirms that the operation was successful.
Backoffice

Validation is performed immediately using the tax authority-certified invoicing software integrated into 3cket (InvoiceXpress, certificate No. 192).

✅ Once this process is complete, the series are automatically validated when each event is created.