This is a numeric depth counter showing how many levels of policy inheritance were resolved to arrive at the current settings for one port breakout capability record, which describes whether a specific fabric-interconnect or switch port can be split into multiple lower-speed ports (for example one 40G QSFP port broken into four 10G ports). A network admin troubleshooting why a breakout capability record picked up settings from an unexpected policy would use this counter, together with the inherited-policy DN, to figure out how far up the org hierarchy UCS Manager had to walk to resolve the value. A policyLevel of 0 means the setting is defined directly on this object; a value of 2 would mean it was inherited two org levels up.