Several accounts receivable confirmations have been returned with the notation verification of vendor statements is no longer

Question:

Several confirmations have been returned with the notation “verification of vendor statements is no longer possible because our data processing system does not accumulate each vendor’s invoices.”

Required:
What alternative auditing procedures could be used to audit these Accounts Receivable
Accounts receivables are debts owed to your company, usually from sales on credit. Accounts receivable is business asset, the sum of the money owed to you by customers who haven’t paid.The standard procedure in business-to-business sales is that...