From HEXONET Wiki
The PushDomain command is used to send .DE / .AT domains to transit / billwithdraw status and change the tag or delete a .UK domain.
IMPORTANT: Please have a look at the Domain API_manual for a current list of allowed parameters.
COMMAND
(required) command = PushDomain domain = (DOMAIN) target = (TEXT)
RESPONSE
(required) code = (CODE) description = (DESCRIPTION) <pre>