DigiCert product docsSoftware Trust ManagerKeypairsStandard keypairsManage keypairsAssign a default certificate to a keypairAssign a default certificate to a keypairYou can set the default certificate for a keypair from Software Trust Manager or SMCTL.Example 1. Software Trust ManagerTo specify a default certificate for a keypair:Sign in to DigiCert ONE.Navigate to the Manager menu (top right) > Software Trust.Select Keypairs.Hover over keypair alias > select Edit from the menu.Identify the Default certificate field and select the certificate you want to sign with from the list.Select Update.Example 2. SMCTLTo specify a default certificate for a keypair, run:smctl keypair update <keypair alias> --default-cert-id=<certificate ID>Command sample:smctl keypair update a609c6e6-fc89-48ff-a0148-1d7001580452 --default-cert-id=a705g6f6-fc89-58ee-a071-1d7001580452