We are unable to add a particular domain. we get the following response.
{“request”:{“act”:“full_zone_set”},“result”:“error”,“msg”:“Unfortunately, you cannot add that domain (“MYDOMAIN.COM</strong>”) to Cloudflare. To find out why, review <a href=“https://support.cloudflare.com/hc/en-us/articles/200167926-What-does-ERROR-Unfortunately-you-can-not-add-that-domain-to-Cloudflare-mean-” target=”_blank">this article</a>.",“err_code”:201}
The linked article is not useful in our case.