Rectifying the Entry and the Role of Suspense Account:

Rectifying the Entry:
When credit purchases from Mohan amounting to 6000 were incorrectly posted as a debit of 6600 to Rohan's account, a rectifying entry needs to be made to correct the error. This rectification is necessary to ensure that the books of accounts accurately reflect the financial transactions.

Role of Suspense Account:
A suspense account is a temporary account used to record discrepancies or errors in the books of accounts. It allows the company to continue with the accounting process while the errors are being investigated and rectified. The suspense account acts as a placeholder until the errors are identified and corrected.

Creating a Suspense Account Entry:
To rectify the entry and balance the accounts, the following entry can be made:

Mohan Account (Credit) 6000
Suspense Account (Debit) 600

This entry debits the suspense account with the difference between the correct and the incorrect amounts posted. In this case, the difference is 600 (6600 - 6000). The credit to Mohan's account corrects the error and ensures that the accounts are balanced.

Rectification Process:
Once the suspense account entry is made, the following steps can be followed to rectify the error:

1. Identify the error: In this case, the error was the incorrect posting of credit purchases from Mohan to the debit of Rohan.

2. Analyze the impact: The incorrect entry resulted in an overstatement of Rohan's account by 600. This needs to be rectified to ensure accurate financial reporting.

3. Create a rectifying entry: The entry mentioned earlier will help correct the error and balance the accounts.

4. Investigate the error: The reason behind the error should be identified and rectified to prevent similar mistakes in the future. It could be a data entry error, miscommunication, or misunderstanding.

5. Reconcile the suspense account: After rectifying the error, the suspense account needs to be balanced. This can be done by transferring the balance from the suspense account to the correct account.

6. Update the accounts: Once the suspense account is reconciled, the corrected entries should be made to the respective accounts, ensuring that the books of accounts reflect the accurate financial transactions.

By following these steps and using the suspense account as a temporary placeholder, the error can be rectified, and the accounts can be balanced accurately.

Debit 12,600