Originally Posted by
christep
Computer says no because the ticket you have is, apparently, a DONE3 and SEZ is in a 4th continent. You should be able to add anywhere that BA flies in the Middle East.
Sorry - just dawned on me - but given SEZ is in Africa, why is it ok to include e.g. Lagos or Accra but not SEZ? I get there is a specific exclusion for South Africa and Mauritius, but SEZ is listed in those exclusions.