From HEXONET Wiki
Only for registrars using our RegistrarOC system.
The ActivateDomainTrade command is used to approve a domain trade, which requires an activation through the registrar (e.g. for .AT domains upon receipt of required documentation). If a customer requests a trade for such a domain with the TradeDomain command, the trade request will not be submitted to the registry until the registrar activates it with the ActivateDomainTrade command:
(required) command = ActivateDomainTrade domain = (DOMAIN)
(required) code = (CODE) description = (DESCRIPTION)