Which of the following statements is INCORRECT for self-balancing ledgers?

Self-balancing ledger system implies a system of ledger keeping which classifies ledgers as per nature of transactions.

In self-balancing system, general ledger adjustment account is prepared in each of the subsidiary ledgers.

In self-balancing system, generally, three ledgers are prepared namely, debtor ledger, credit ledger and main ledger

Under sectional balancing system, if the error affects the total of debtors and creditors accounts, it is rectified by adjusting the accounts of debtors and creditors itself without any additional entries.