Payment under RCM

Unregistered dealer can not make inter state. supply. If he does he will have to apply for registration

unregistered dealer can not make ISS .There for no question of IGST or cgst

If your supplier is dealing in Interstate transactions, then mandatorily he has to obtain registration under GST act, irrespective of his turnover.

Sir I agreed with u 100%
But one of my Clint has purchased some goods when he was on personal tour.. For trade sale without quoting gstn like Rs. 7500
Now he sold that goods as normal course of business after charged cgst & IGST
Now I wants to show that transaction in 3B..
But problem is that what should I do??