1. Go to Settings > Certificates and Key Pairs.
  2. Locate the appropriate certificate by browsing or searching for certificates.
  3. Click the details icon to expand the certificate.
  4. Click the CSR tab.
  5. In the Import CA response section, click Choose.
  6. On the local file system, locate the CA response file.
  7. Click Open.

The file is imported to PingOne, and the key pair entry is updated to reflect the new issuer values in the CA response.