So, if you are reading this, it probably means that you need help urgently with regards to your tax. It has become the SARS practice to audit most cases where there are large claims against income. (Even when there are only a few claims against income, we have seen a sharp increase in audit cases)
The obvious reason for SARS audits is to check if things are done correctly and to verify the validity of the claim and the amount of the claim. If they are not happy, they will simply disallow a claim and issue an assessment.