The MIB's DESCRIPTION for cucsLicenseInstanceSku is only the auto-generated stub 'Cisco UCS license:Instance:sku managed object property', but the 'sku' property name together with its SnmpAdminString type tell us this column, on a specific licensed-feature grant on a fabric interconnect (a feature name plus a quantity), holds the sku as UCS Manager's data model defines it, exposed here as a read-only SNMP value (read-only). The sku is the Cisco product/part number tied to this specific licensed feature, the identifier that maps this row back to a specific line item on a Cisco order or PAK. A value like 'UCS-FI-PORT-01' would let procurement match this license instance to a specific purchasable SKU.