This indicator expressed as a URI indicates:

A certificate validity status information service issuing Online Certificate Status Protocol (OCSP) signed responses and operating an OCSP-server as part of a service from a (qualified) trust service provider issuing qualified certificates, in accordance with the applicable national legislation in the territory identified by the TL Scheme territory (see clause 5.3.10) or with Regulation (EU) No 910/2014 [i.10] whichever is in force at the time of provision.