boomarang
Thanks looked on the SA CAA
website and it appears that if the aircraft has operators rights it is allowed to carry out intended business. Assuming no local operator objects to the operation.
With regards to the licence the crew need either a Swaziland licence or validation based on they international (Ghana SA UK etc) licence to fly and if that is issued complies with ICAO standards there is not much SA CAA can do.
However if the operational side is at fault then the big yard stick needs to be brought out
But as
SA Fred states with regards licence that is upto the Swazis. But I dont hold out much hope because as in many other parts of Africa money does the talking