Delete firewall rule by API


How to delete firewall access rule by API, rule has organization scope.
Organizations in API are deprecated now.

I have rule id and organization id (rule has organization scope).

Having that I tried to delete rule by

  1. DELETE accounts/:account_identifier/firewall/access_rules/rules/:identifier

as accounts should be used instead of deprecated organizations (“An Organization is an entity which holds a set of zones for multiple users to interact with.Please use equivalent /accounts API endpoints. Account APIs provide a broader range of features and are backwards-compatible to organization APIs.”)

  1. DELETE organizations/:organization_id/firewall/access_rules/rules/:identifier

In both cases response is:
“success”: false,
“errors”: [
“code”: 10000,
“message”: “Authentication error”

despite using correct auth key, email, rule id and organization id