This holds the name of the licensable feature that this uploaded license file's contents actually grant, as parsed out of the file itself. An admin cross-checks this against the feature name shown on the Feature object it should be activating, since uploading the wrong license file (e.g. a port-expansion license when a VIC feature license was needed) is a common licensing mistake this field exposes. A value like 'PORT_ACTIVATION_6248UP' tells you this specific file's payload is for port licensing on a 6248UP fabric interconnect model, not some other feature.