This enumerated field records whether this memory-unit constraint definition originates from Cisco's built-in hardware-compatibility catalog or has been overridden locally, similar in spirit to policyOwner on the memory configuration policy object. An admin who has manually adjusted a DIMM compatibility rule (for instance to permit a part Cisco hasn't yet certified) checks this to confirm the override is actually in effect rather than being silently replaced by the next catalog update. A policyOwner value indicating a Cisco-supplied origin means the rule will be reset to Cisco's definition on the next firmware/catalog update.