What are subsequent receipts tests? Why do they provide useful evidence about accounts receivable valuations?

Question:

What are subsequent receipts tests? Why do they provide useful evidence about valuations?
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...