Description
You may encounter this error when you're trying to remove the only applicable group from a security policy.
Reason
Security policies have to be applied to groups in order to affect the members of the groups. Without being applied to a group, a policy would have no use. Therefore, attempting to remove the last applicable group from a policy will result in an error.
Solutions
- If you do not need the policy anymore, delete it.
- If you do not need the policy right now, but may need it in the future, deactivate it.
- If you're planning to apply the policy to a different group, do so before removing this group.
- If you have a specific user who needs to be excluded from the policy, either remove them from the group, or exclude only them from the policy.