Agreed all expenses debited in profit and loss must show in gstr3b
There is a column to show category wise
Else y it is there
Also all expenses attracts GST under certain conditions
Therefore all expenses must shown in return
I learnt later that Non GST supplies are only expenses related to Petrol, Diesel, liquor which are out of the perview of GST. Neither exempted nor b2c. Coneyance paid against petrol bills etc may be enetered in the column, nothing else