The domain which you have entered belongs to another deployment/region.

The domain which you have entered belongs to another deployment/region.

Hi,

I am trying to add a user with their email address to our Zoho One organization but keep getting the error message: 
  • The domain which you have entered belongs to another deployment/region.


I have users with the same domain added, but this particular one is being rejected. What does this mean and how do I resolve?