X.509 certificates for SAML
Store and activate the necessary IdP certificates for your SAML configuration.
The X.509 certificates are the IdP certificates that a SAML configuration uses. After you
install a certificate, you can add as many certificates as necessary. When there are multiple
certificates, the system uses the first active certificate that is found. If you set the URL for
the Metadata URL from which IDP properties are imported field, the system
automatically polls the IdP for a current, valid certificate when your certificate is no longer
valid. It appends this certificate to your instance, and uses it for your active SAML
configuration.

Remarque :
Polling occurs if the IdP is accessible outside of your
network.