Gst registered regular scheme dealer scrutiny of gst returns by gst department .
My doubt :gstr3b and gstr1returns matching only or gstr3b ,gstr1 and p & l and balance sheet matching by gst department officer asked in gst act.
Mismatch of data in difference legal filings.:-
Earlier there were no data sharing between various departments of government hence some people used to file different P&L and B/s in income tax and sales tax. But then sales tax department take a step to match data with data available with income tax department and they collect PAN number of all the taxpayer and issued TIN numbers in place of earlier sales tax number.
Currently GST is also a PAN based number and data sharing in easily available between income tax department and GST officials.
Currently SEBI has also singed data sharing MOU with income tax department. Hence now a days, if any assessee files different data with difference government agencies then they may have to face scrutiny, penalty or even prosecution..
Hence our data filed with income tax department should be match with GST filings and SEBI database.
Coming to your question,not only data of GSTR-3B and GSTR-1 should match but also data filed with income tax like P&L, Balance sheet should match with your gst filing.