TCS reconciliation obligations require suppliers and e commerce operators to match outward supplies; discrepancies trigger rectification, tax and penalties. Section 52(8)-(15) requires reconciliation of outward supplies between e commerce operators and suppliers; where the operator reports greater supplies than the supplier, the discrepancy is communicated and must be rectified in the month of communication or else added to the supplier's next return, attracting additional tax and interest. Authorities may require operators to furnish supply and stock details within a specified period, noncompliance attracts penalties, and an operator's statement cannot be filed after a maximum statutory period, subject to possible government relaxation.