The BAS is not showing the options where we put the amount of GST on sales & GST on purchases

Error: CMN.ATO.AS.EM141 - GST has been removed from this activity statement because you are no longer required to report it to the Tax Office."

Answer: This is an ATO concern (ie on prefill ATO returns empty document with no sections.) please contact ATO directly.

One possible reason, the business is not registered for GST.