Issue of documents and validity checks
Article 4
1. National issuing authorities, and third country issuing authorities shall either produce the relevant electronic documents directly in ELAN or transmit them to ELAN upon having produced them in their respective national electronic systems. 2. Each document made available in ELAN shall bear: (a) the qualified or advanced electronic seal based on a qualified certificate of the competent issuing authority; or (b) the qualified or advanced electronic signature based on a qualified certificate of an authorised representative of the competent issuing authority, in accordance with Regulation (EU) No 910/2014 of the European Parliament and of the Council ( 15 ) . 3. ELAN shall automatically verify the validity of documents produced in the system or transmitted to it.