I would also review CAR 401.03 (just above the reference Pilot DAR provided) as well as 421.07 (Linked here:
Part IV - Personnel Licensing and Training - Transport Canada )
If the South African license requires something akin to a BFR (Biennial Flight Review) for the license to be valid, then you might not be able to meet the requirements of 421.07(a)(i), specifically the reference "...valid for the privileges requested...", without going home to do the BFR.
In some jurisdictions, this BFR requirement can be waived if you have completed training to a license, rating, or completed company mandated training (proficiency checks, line training, line checks, etc.) within the two-years the BFR covers, but that'll be located in the South African regulations.