Which of the following is not an error of principle Repair or the over hauling of machinery purchased debited to repairs account Cash paid to Karan posted to salary Sale of old car credited to sales...

Which of the following is not an error of principle

1. Repair or the over hauling of machinery purchased debited to repairs account


2. Cash paid to Karan posted to salary


3. Sale of old car credited to sales account


4. Purchase of furniture debited to purchase account