error in modifying my domain

[uniquedurlabh42]

Hello,
I wanted to modify my domain in x10hosting's account, which is not happening. I am getting the following message. I have already changed the name servers in domain control panel.

"Hosting Domain Modificationsubmitted March 15 at 6:11 pm ED36ZGIJTKM A
action status: Error.
information: A change to your hosting account's primary domain.
result: A system error occurred while processing this action.
Error Code: C085843"

Help me ASAP.

Thank you