Answer:
Extract customer sale balances that exceed the customer credit limit.
Step-by-step explanation:
Commission schemes are used by employees that collect compensation inform of commission to inflate their earnings.
Commissions are paid to employees for volume of work done. For example how many sales did a salesperson complete? Also payment is based on percentage of sales that employee is being paid.
To inflate commissions an employee can either falsify sales volume or increase rate of commission.
When customer sales balance exceeds his credit limit, it shows that sales volume was inflated, and this shows a commission scheme is being practices.