You need a user certificate to sign documents electronically.

You can request a user certificate in the RA-Portal.

You must then import the certificate into the Windows certificate store.

Please note
Group certificates or the digital ID of group certificates, such as those issued for functional e-mail inboxes, cannot be used for electronic signatures because they are not typically associated with a single person, which is a requirement for electronic signatures.

After importing your certificate into the certificate store, check your Acrobat Reader security settings and import the required root certificate.

You can then configure your electronic signature and validate the advanced electronic signature of a PDF document issued by the DFN-PKI or GÉANT/TCS.