This reports the hierarchy depth (organizational level) at which this CDP link policy was defined within UCS's org-tree structure. An admin managing policy inheritance across multiple sub-organizations checks this to understand whether this specific policy was defined at the root org (applying broadly) or deep in a sub-org (applying narrowly), which explains why two vNIC templates in different orgs might end up using different CDP settings even with similarly named policies. A value of 0 means this policy is defined at the root organization; a higher value indicates it was defined several levels down in a sub-organization.