where you would correct each of the differences and errors listed below,( Debtors control or Debtors list )and explain your reasoning as so how, why and where you will make the correction.

1. A credit invoice (issued by the business) has not been recorded at all.
2. The Debtors control column in the debtors journal was "undercast"
3. Notification has been received that the outstanding balance on one of the debtors should be written off as the debtor is insolvent.