Adding new cloudflare DNS Servers from my other cloudflare account and got Error 1000 as shown in the attached image. Please help!

!(upload://mTc3J8yDcxaXrC3rJsOMnHQZppg.png) :pensive:

Maybe the issue is that the IP addresses are belonging to a service which is already on Cloudflare?

If you are the Website owner, kindly check the steps in the article from below: