IS THIS VIOLATION OF SECTION 269ST?

Hello everyone…….Mr.A sold goods of Rs. 3 lakh to Mr.B on 10/04/2017……there is only single bill of Rs.3 lakh made by Mr.A….Mr.B gave cheque of Rs.1,80,000/- to Mr.A and deposited remaining amount Rs. 1,20,000/- in the account of Mr.A against above transaction…….is this violation of section 269ST?.......your replies are highly appreciated….thanks in advance….