En Portugal, Todas las facturas deberán incluir código QR
As of January 2022, and pursuant to Article 4 of Decree-Law no. 28/2019, QR codes must be included on all invoices and other fiscally relevant documents issued by invoicing software certified by the Portuguese Tax and Customs Authority (Autoridade Tributária e Aduaneira). The QR code on the document must be perfectly legible. Documents with multiple pages should contain the QR code on either the first or the last page.
Source SNI
