You can anonymize deleted Collaboration users according to GDPR.
Prerequisites
The user was deleted in ARIS Administration.
Procedure
invoke anonymizeUser on ecp_m user.list="y4711" tenant.id="default"
Collaboration synchronizes every 24 hours. That means that the anonymization is not immediately visible.
Activities of this Collaboration user, such as posts, comments, groups, are shown with Anonymized user instead with the y4711 user name. If several users are anonymized a number is added, such as Anonymized user 2.