Under art. 22 para. (2) of the Technical Norms on GEO 140/2020 establishing measures for the use of electronic documents in the fields of constructions, architecture and urban planning, the documents signed with a qualified electronic signature must meet the following requirements:
a) to be signed with a qualified certificate for electronic signature according to The EU Regulation 910/2014;
b) the signed files to be in a PDF format, and the signature to be compliant with the specifications of the PDF signature, as set out in art. 1 of the Commission Implementing Decision (EU) 2015/1.506 of September 8th, 2015, laying down specifications for the formats of advanced electronic signature and seals to be recognized by public bodies pursuant to art. 27 para. (5) and art. 37 para. (5) of EU Regulation 910/2014 of the European Parliament and the Council on electronic identification and trust services for electronic transaction on the internal markets;
c) documents to have the LTV option embedded, as defined by the ETSI TS 102 778-4 standard or later versions of it, which allow long term validation of the signed document;
d) documents signed with a qualified electronic document to be stored in electronic format.