An organization level rate limit policy is created by default while provisioning an API Center domain. The organization level rate limit policy is named as system-org-level-rate-limit.
If you do not apply a rate limit policy while designing or creating a managed API, this organization level rate limit policy gets applied to the API by default. You can associate the organization level rate limit policy with any number of APIs. The API References area of an organization level rate limit policy displays all the managed APIs that use the policy.
You can edit only the number of calls and time frame values of an organization level rate limit policy. Any change to the existing values reflects in all the API operations that use the organization level rate limit policy. You can't disable the organization level rate limit policy.