Gst refund - Declaration for refund

Pavan biyyala (38 Points)

07 May 2021  
As declaration by CA/CMA is not required under following circumstances
1. refund of tax paid on goods or services
2. refund of untilised itc in case of
a)zero rated supply without paymt of tax. or
b) under inverted duty structure

Then under what circumstances declaration of CA/CMA is required??