GTA to GTA service

Anshuman Basu (account -GST) (1556 Points)

01 October 2020  
we are registered GTA service provider.
we provide vehicle to Mahindra Logistics.
Services Code is 996601 (vehicle Hiring Service).
we supply vehicle to Mahindra Logistics from July 20.
In July and August 20 we put our sales figures in GSTR 1 in column no 4A,4B,4C,6B,6C- b2b Invoice and Tick "Reverse Charge Machanism".
In GSTR 3b we put our sales figures in column no 3.1.C

Now question is
1/ are we right or wrong?
2/ If we are wrong, then in which column we put in our sales figures in GSTR 1 and 3B