A supplier has sent us a statement dated $28$ February $2019$ that we need to make payment for which is due by $31$ March $2019.$ The amount due on the statement is R$10,000.$ On our company ledger we have a payment that was made on $28$ February of R$2000$ and an invoice of R$1000$ which we recorded in February but are both not reflecting on the supplier statement. The amount outstanding in our ledger is R$9000.$ Please prepare the reconciliation from the supplier statement to our GL$.$

What could be a reason for the payment of R$2000$ not be reflecting on the supplier statement as at $28$ February $2019$ ?