How many Auth Connectors (BCCA) are supported by the Web Security Service (per tenant).
A maximum of two (2) Auth Connectors are supported by the Web Security Service.
If you have two Auth Connectors installed, then you can select which BCCA server will be the Primary connector.
You can optionally also contact support to have your Auth Connectors setup in "Active-Active" mode.
Auth Connector (BCCA) reference docs: