il certificato associato alla firma elettronica avanzata fosse valido al momento della firma e, qualora la firma elettronica avanzata sia associata a un certificato qualificato, quest'ultimo fosse, al momento della firma, un certificato qualificato di firma elettronica conforme all'allegato I del regolamento (UE) n. 910/2014, rilasciato da un prestatore di servizi fiduciari qualificato.
the certificate that supports the advanced electronic signature was valid at the time of signing, and when the advanced electronic signature is supported by a qualified certificate, the qualified certificate that supports the advanced electronic signature was, at the time of signing, a qualified certificate for electronic signature complying with Annex I of Regulation (EU) No 910/2014 and that it was issued by a qualified trust service provider.