Every registrar has its own message queue on our EPP servers. Registry Services will put messages in that queue for all changes made by Registry Services which are not requested by the registrar through EPP. Such messages are not part of the EPP RFCs. Therefor we have implemented the following extensions <iis:createNotify/>, <iis:updateNotify/>, <iis:deleteNotify/> and <iis:transferNotify/>.