It is possible to build an audience that contains itself. The Audience or Group shows as deleted when it has not been deleted.
- Studio | People | Audiences
- Classic Studio | Manage | Groups
Saving a Group allows you to create a Group where the Group name is the criteria. Creating a group that contains itself will result in a corrupt with state: erroneous. This can cause campaigns to silently fail to send to that group.
This issue has now been resolved by Product Engineers, and moved to Complete on the Known Issues Tracker. (Issue ID: CSUP-61)