Delete a Managed Entity
To delete a managed entity type, click on the Trash icon beside its name in the Managed Entities list, as shown below.
A Delete operation should be performed carefully as the operation is irrevocable and it deletes both, the unpublished (editable) and published copy of the entity type. Deletion will also affect the pipelines the entity type is configured in.
Predefined Entity
Predefined Entities are the ones that are can only be consumed by the studio user and not managed. These are managed and maintained internally by the system.