This is the policyOwner property of a storage auth key object, a stored authentication credential, such as a CHAP secret, that UCS uses to authenticate itself to an external storage target, indicating whether the object's policy is controlled locally or by a higher-level UCS Central/global policy resolution. An admin deciding whether they can safely edit a storage auth key's settings locally checks this field first, since a globally-owned policy will simply be overwritten on the next resolution cycle. For example, if policyOwner on a given storage auth key shows it is owned by a policy source outside the local domain, an admin knows to make the change there instead of on this instance directly.