Travel allowance for commission earner

I am currently at the travel allowance part of my tax return. This question arises. Do you receive a travel allowance from your employer? Click Yes if source codes 3701 or 3702 appear on your IRP5, AND if you kept a vehicle logbook. My answer is no as those source codes do not appear on my IRP5. However I am a full commission earner and keep a logbook. Where will I input those figures/amounts?

Then you will include this amount under the Tax Deduction section for travel and or depreciation.

What amount do I input.
I travel 68% business.
17500 kms business

You would then take all the expenses related to the car such as fuel, maintenance, license, insurance etc and multiply that by 68% as this is the apportionment for business travel. Include that under the travel deduction section. The car itself would be depreciated over 5 years and then apportioned for the 68%.