Error in filing Debtors as creditor

Greetings to all the respected members. I need your valuable suggestions and solution to my problem. Im working for trading firm and I have found an error in its accounts. The earlier Accountant had made arthimetical mistake and showed a debtor as creditor. Since two years the same party is being shown as creditor when in actuality the erred party account is nullified.  Now while during the audit i found out this mistake. How can rectify this mistake. How can i remove that party from the creditors list. Please help me with as I have to submit the accounts to the CA for auditing.