ACM does not provide managed renewal for certificates that you import.
For more information about importing certificates into ACM, including the differences between certificates that you import and those that ACM provides, see Importing Certificates in the AWS Certificate Manager User Guide.
To import a certificate, you must provide the certificate and the matching private key. When the certificate is not self-signed, you must also provide a certificate chain. You can omit the certificate chain when importing a self-signed certificate.
The certificate, private key, and certificate chain must be PEM-encoded. For more information about converting these items to PEM format, see Importing Certificates Troubleshooting in the AWS Certificate Manager User Guide.
To import a new certificate, omit the CertificateArn
field. Include this field only when you want to replace a previously imported certificate.
This operation returns the Amazon Resource Name (ARN) of the imported certificate.