The relevant legal principles are as follows, with key references provided for each. Click on each reference to see a more complete explanation.
Provinces must receive & consider applications for international export permits, not the national government.
The province must make the decision whether to issue the permit or deny it.
References
The province must make this decision within 20 working days of receiving the application, and must issue the permit within a further 5 days.
The province must base its decision only on the criteria allowed under South African law.
The province is allowed to take into account only those specific factors listed in the Threatened or Protected Species Act.
The province's decision must be consistent with the rules of CITES, as reflected in South Africa's CITES Regulations.
Any attempt by the Minister, or her department, to influence that decision, or the timing of it, would be a Constitutional violation.
When all of the above is applied, several types of export permit applications must, as a matter of law, be approved.
Exports originating in a provincially recognized CITES Source Code 'C' captive breeding operation must be approved and subjected to Appendix II treatment, no matter what purpose the export is expected to serve. (No import permit required.)
Exports done when a South African resident is relocating to any other nation, and the horns form part of their legally obtained personal possessions, must be approved under CITES Purpose Code 'P', no matter what the source of the horn. (Import permit not prerequisite to export permit.)
Exports done when a non-resident acquires the horn legally in South Africa and wishes to return home with it, must be approved under CITES Source Code 'P', no matter what the source of the horn. (Import permit not prerequisite to export permit.)