Duration for submission of AFS

I have a question, what is the maximum duration which you are given by SARS for submission of annual financial statements after your financial year end? I am asking this question because I was denied a Tax clearance certificate because I have not yet submitted my financial statements. Also, what is the effect thereof i.e. penalties involved?

Have you filed your final year end tax return?

No I have not yet filed my final year end tax return

Once you have filed, which can only be at the most 12 months after year end then usually 30 days to submit documents if requested.