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To communicate to Tax Authority (TA)  the Numbering Series used to post Invoices and other fiscally relevant documents, a new update for Microsoft Dynamics NAV/365 Business Central is now available. We also inform you that the solution is prepared for the two communication mechanisms provided by the Tax Authority: manual or web services.


Please note that it’s mandatory to communicate the Numbering Series in the following classes of documents:

  • Invoices and corrective documents
    • issued in the name of the taxable person
    • issued under self-billing
    • issued in the name and on behalf of third parties
  • Transportation documents
  • Working Documents
  • Receipts

Also, it’s important to keep in mind that:

  • According to ordinance 351-2021.XXII, although the ATCUD can be associated with the series in use and communicated during the year 2022, it is only mandatory from 1/1/2023;
  • Multi-annual series are only communicated in the year in which they start to be used;
  • Each numbering series must be communicated to TA before being used.

More information in available at Portal das Finanças.

The updates are available to install, so we kindly ask our Customers to create a new ticket on the Support Platform, in order to assure a correct planning of the work.

Keeping the system updated, and in a supported version, is essential to ensure that the program is compliant with the Legal and Tax Requirements in force.