This indicator expressed as a URI indicates:
A qualified validation service for qualified electronic signatures
and/or qualified electronic seals 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.
When applicable, this service type shall be further specified through
the use of an additionalServiceInformation extension (clause 18.104.22.168)
within a Service information extension (clause 5.5.9) by using the
appropriate identifiers indicating whether it is provided for electronic
signatures and/or for electronic seals (as specified in clause 22.214.171.124).