CDNR-AMENDMENT NOT DECLARE IN GSTR-1 - Goods and Services Tax - GST

Dear Sir, In 18-19, we forget to update CDNR-Amendment in Some Invoices (Price Reduction ) in GSTR-1 ., but we adjust the same in GSTR-3B ., (Documents pertaining to CDNR Available with us ) Request you to please guide wether we have recd any notice from GST Deptt for the GAP Between GSTR-1 GSTR-3B .,