During the handling of a case, your organization would like to have personal and contact details of those involved, so that they can be contacted. This data is therefore noted in the case.
As soon as a case is closed, that data is no longer necessary and you may want to anonymize it automatically under the General Data Protection Regulation (GDPR).
Do you want to know how you can automatically anonymize cases as (functional) application manager? Then take a look at this training.
Good luck!