||The Certificate Policy is Unmanaged and the user has not had a corresponding certificate imported.
||An attempt has been made to issue a Credential Profile to a user that contains an unmanaged certificate. The user has no valid imported unmanaged certificates. If the credential profile uses the Use Existing option, check that the unmanaged certificate has not expired; this configuration requires a valid certificate.
||Either issue a different Credential Profile (one without an unmanaged certificate, or, in the case where the certificate has expired, with the Historic Only option selected for the unmanaged certificate, which will not check the expiry date) or upload a valid certificate for the user; you can use the Upload PFX Certificates workflow to upload a certificate.
||Identity Agent Provisioning