The system analyzes whether the uploaded .csv file contains Customer Connect license keys that are missing from your vCenter license inventory. If the .csv file contains such missing license keys, the system offers you to add those license keys to your vCenter license inventory.
Some of the license keys that you add on the Add license keys page of the wizard might be replacement keys for inactive keys that are currently in your vCenter license inventory. An inactive key is a key that is combined, divided, upgraded, or downgraded. To complete the replacement of inactive license keys with new license keys from Customer Connect, you must manually remove the inactive keys. For information about removing inactive license keys, see Remove License Keys That Have Been Combined, Divided, Upgraded, or Downgraded
Other license keys that you add on the Add license keys page of the wizard might be upgrade keys for some old license keys in your vCenter license inventory. To complete the upgrade process of old keys in your vCenter license inventory with new keys from Customer Connect, you must manually remove the inactive keys. For information about completing the license key upgrade process, see Upgrade License Keys in Your vCenter License Inventory