Sorry it took so long ATI:
On my IRP5
Income source codes:
3601 - Taxable income
3605 - Taxable anual payment
3607 - Overtime
3712 - Telephone allowance
3810 - Medical aid paid on behalf of employee
NOTE:
If this is your second e-filling submition that field is not highlighted as required. Unless you might have changed companies or what ever.
I left mine blank on my latest submition and it's fine
