Starting January 1, 2027, all PDF invoices issued in Portugal must feature a qualified electronic signature (QES) to be legally valid. This requirement, driven by Decreto-Lei n.º 28/2019, means businesses must adapt their invoicing processes to ensure compliance.
Starting January 1, 2027, all PDF invoices issued in Portugal must feature a qualified electronic signature (QES) to be legally valid. This requirement, driven by Decreto-Lei n.º 28/2019, means businesses must adapt their invoicing processes to ensure compliance. Read More Technology Blog Posts by SAP articles
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