I want t to remove domains from zoho system to start afresh

I want t to remove domains from zoho system to start afresh

Hello 

I am trying to add the domains to my zoho account and I got in return the error messages below

For domain1I got  error message "Domain already exists."

for domain2 I got error message " The data you have entered already exists"

Note that, the two domain are not visible in the control panel

Attached the error message


Thank you for your support