Order for the domain registration with InternetX is in the "Long Running Operation" status, even though the domain seems to be already registered.
The domain registration order will not be marked as
Completed unless registrar returns
payable date for this domain. So, even if the registrar returns the
<registrar_status>ACTIVE</registrar_status> for the domain, but without
payable data, BA considers the domain registration procedure unfinished.
Wait till the date is returned, you can contact registrar to clarify why it takes so long to return the required data.