Yes. This is possible if the person associated with the technical account to which the valid authentication certificate is linked has been authorised to access multiple electronic mailboxes.
In practice, this means that once a form granting a natural person, legal entity, or public authority permission to access and manage an electronic mailbox has been submitted, the authorised person can access that mailbox using their authentication certificate. The authorisation form is available directly in the electronic mailbox and can be submitted electronically or in paper form.
One entity (FO/PO/OVM) may represent an unlimited number of other entities based on authorisations granted in this way. The same authentication certificate linked to its technical account can be used to access each mailbox it is authorised to manage.
To call ÚPVS services on behalf of a represented entity (the end consumer), the information system of the representing entity (consumer) must call the IAM STS authentication service with the OnBehalfOfId parameter. This parameter must contain the UPVSIdentityID (UUID identifier) of the identity that granted the representing entity permission to manage the mailbox.
In response to this request, the IAM service issues a SAML token for the represented entity. The information system can then use this token in the standard way when calling individual ÚPVS services.
The UUID of the represented entity required for the OnBehalfOfId parameter can be obtained through the ÚPVS graphical interface. In the identity's “Profile” section, it is displayed in the “Identity ID” field. This identifier is available in the profile of both the identity that was granted representation rights and the identity that granted those rights.
Once ÚPVS services are being used on behalf of a represented entity through an STS token obtained using the OnBehalfOfId parameter, the authentication certificate of the represented entity must no longer be used, if the representing entity has access to it under a power of attorney included as an annex to the Integration Intent Agreement (DIZ).
The model power of attorney published by NASES in May 2019 and included as an annex to the DIZ contains an option allowing the representing entity (consumer) to configure authorisation to manage the electronic mailbox of the represented entity (end consumer).
The power of attorney attached to the DIZ therefore allows the authorised representative (consumer) to grant itself permission to access and manage the electronic mailboxes of the represented entities on their behalf using their authentication certificates. This enables migration from the original method to the new method of managing electronic mailboxes.
If access and mailbox management permissions are to be granted exclusively to a technical account, meaning that the statutory representative of the organisation receiving the authorisation must not be able to access those mailboxes using their electronic identity card (eID) or MobileID, a list of the entities for which access should be restricted must be sent to NASES. This restriction can also be configured for existing representation arrangements.
Note: If an entity needs to use services on behalf of other entities from different information systems and wishes to configure different authorisation levels for those systems or use more than one certificate or technical account, this is also possible. In such cases, multiple technical accounts may be registered for one identity, or multiple certificates may be registered for a single technical account belonging to that identity.
A new form is being prepared that will allow mailbox management permissions to be granted exclusively for access through technical accounts using authentication certificates, with the option of also allowing access through eID and other methods. This will prevent representation arrangements from being unnecessarily displayed on the login page to the statutory representative of the representing identity when logging in using eID.