We need a white-list of the schema-field pairs that can be kept indefinitely in EL database.
Those must be extracted from the purging strategies that were agreed at the time of EL's audit.
This white-list will be used to implement the corresponding auto-purging system.
When the audit was done, a white-list was created, but since the implementation of the purging was deprioritized, we need to update this list, because several schemas that we agreed to partially purge or no purge have new fields that must be included.
Also, new schema owners must be notified that their new schemas will loose data after the auto-purging starts. And that if they want to discuss other purging strategies for their schemas, it should be done now. So that the fields can be included in the white-list.