Guide to communicating invoicing series (ATCUD)
As of January 1, 2023, Portuguese companies are obliged to have a unique document code, known as ATCUD, on their tax-relevant 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.
🔗 See more information about ATCUD on the Finance Portal
⚠️ You must follow the steps below and enter the indicated data in the back office to create paid tickets. Free events are not subject to this requirement.
How do I create a new user?
- Log in to the Finance Portal.
- Search for"User management".
- Select the option "Create a new user".
- Define a user name.
- Set a secure, random password(https://www.random.org/passwords/).
- Authorize the WSE operation - Communication and Serial Management via web service .
- Submit.
⚠️ For security reasons, the user created must be exclusive to 3cket.

What data must be entered in the back office?
After creating a new user , the user number appears on the screen ( see example ). You need to enter the username and password in the back office, following the steps at the bottom of the page .

How and where to enter the data in the back office?
Data entry on the platform is done through the promoter area > manage promoter > billing .
After entering and updating, just wait for the green notification that the operation has been successful.
Validation is performed immediately with the billing software certified by the Federal Revenue Service and integrated with 3cket (InvoiceXpress with certification number 192).
