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.
If you change the owner of a policy to a user account that does not have access rights to the specified targets, the new owner can modify the policy settings but cannot view the policy data.
If changing the ownership of the policy is not an option, you can copy the settings from the existing policy, create a new policy with the same settings, and deploy the settings to different endpoints or managed products.