Multi-year certificate, do I need to re-verify and install the certificate in the second year?

Specific situations require specific judgment:

Most multi-year orders in even years will have the certificate issued directly, without needing to redo validation (Rapid requires validation every year), but there are also cases where validation is required in even years, depending on whether the validation is still within its validity period.

The newly issued certificate needs to be reinstalled and redeployed every year.