Is it possible to turn off IPv6 Compatibility?

My server doesn’t support ipv6,so i want to turn off IPv6 Compatibility.
But it can not change on the website.
I have try to use API but not work.
{“result”:null,“success”:false,“errors”:[{“code”:7003,“message”:“Could not route to /client/v4/zones/zone_identifier/settings/ipv6, perhaps your object identifier is invalid?”}],“messages”:}

It there anyway to turn it off?

Hey!

I recommend you to follow our support article to check how to configure: Understanding and configuring Cloudflare’s IPv6 support

If your origin web server is not compatible with IPv6, Cloudflare allows toggling IPv6 Compatibility to Off for domains on Enterprise plans.

Take Care!