Zoho Entry for Zero Value

Zoho Entry for Zero Value

Hi,
We have an application that is collecting the GST and Commission for the payments. We also offer discounts for the payments. With some discounts, the GST and the Commission amount will be zero. So in that condition do we need to enter the GST and Commission in Zoho Since the amount is zero. Also, do we need to create an invoice for that commission amount with GST?