The IPv4 action to assign to this rate policy. For BOTMAN policies, choose monitor, delay, slow, deny, tarpit, none, or a custom action. For WAF policies, choose alert, deny, challenge_{id}, or none. Or use deny_custom_{custom_deny_id} to apply a custom action to your WAF rate policy. Run Modify a custom deny action to manage your custom deny actions. If the action is none, the rate policy is inactive in the policy. Refer to Challenge actions for POST, GET, PUT, and DELETE operation details.