Error in changing my main domain.

[lorenzo-bryan]

action status Error
information A change to your hosting account's primary domain.
result A system error occurred while processing this action.

Error Code: 1E9F63B0

 

[vishal]

action status Error
information A change to your hosting account's primary domain.
result A system error occurred while processing this action.

Error Code: 1E9F63B0

Your error code shows that the domain name is owned by another user.
Did you park it or added a addon before

 

[lorenzo-bryan]

The original domain is troubledblogger.x10.biz but I'ved decided to change it to fit the content of the site to its name.. After that, I realized that I'm having error when I changed it to dailynews.x10.biz so I changed it back to troubledblogger.x10.biz and the error occurs. Is it posibble that my first domain name has taken by another?!