On my IRP5 I have a Source code of 3702 which is for my non-taxable travel allowance. When I submitted my tax return I received a letter from SARS saying that I need to submit relevant documentation because my non taxable travel allowance exceeds maximum permissible. This is not true as my total amount was only R2211 which is clearly less than the permitted 8000km. As I did not keep a log book what relevant documentation do I need to submit? As I understand, since my travel allowance is less than 8000km per year this is not taxable and I therefor don't need to have a log book. Can someone please help me as when I called the SARS contact centre they said I need to submit a log book.