This is the rn (Relative Name), the single naming segment that, appended to its parent's dn, forms the full dn for this one instance of an image-provisioning policy defining the rules UCS Manager applies when automatically staging or applying firmware/OS images to UCS blades or rack servers. UCS Manager derives this segment automatically from the object's own defining attribute (such as an address, index, or configured name), so seeing a distinctive rn like this is how you tell one Policy row apart from every sibling row under the same parent. For this class the rn typically looks like 'imgprov-pol-AutoDeploy'.