There are two options to fix the issue:
- You can use the Policy Management screen to change the owner of a policy to another Apex Central as a Service user account:
https://docs.trendmicro.com/en-us/enterprise/apex-central-as-a-service-online-help/policies/policy-management/policy-management_001/changing-the-policy-.aspx - You can also change the policy owner to an Active Directory group, which designates all Active Directory users within the group as owners of the policy. When you change the owner of a policy, Apex Central as a Service sends an email notification to all user accounts assigned the "Administrator" role.