Taxfree sales in gstr1

In gstr 1 where we have to menntion taxfree sales ?

In box 4A, 4B, 4C, 6B, 6C - B2B Invoices @ 0% or 8A, 8B, 8C, 8D - Nil Rated Supplies ?

If we filed in box 8A, 8B, 8C, 8D - Nil Rated Supplies then how our party will know about thair purchase.