In the evaluation of billing transaction processing and control design in the following information:(a)identify four potential weaknesses. briefly explain the potential misstatement, recommended correction and possible weakness of all four potential weaknesses identified.

When Mr. Cooper Teal (bookkeeper) receives a delivery advice, he matches them with the open sales orders and reviews them for agreement in products and quantities ordered and delivered. If they match, Mr. Cooper Teal initials the delivery advice and enters the date of delivery into the open sales order file on the PC. The computer automatically prices the products, calculates product amounts, totals the invoice, and calculates the cash discount, which is 2/10 net 30. The computer then prints a sequentially numbered, four- part sales invoice and writes the specifics of the sale to a daily-computerized sales file. The bookkeeper records the gross sales, not net. Copies one and two of the invoice are mailed to the customer. Copy three is filed by the customer and copy four, along with the delivery advice, sales order, and approved sales requisition, are filed by invoice number.

In the afternoon, Mr. Cooper Teal uses the sales recording software to access the daily sales record, the accounts receivable subsidiary ledger file, and the sales journal file. Sales for the day are posted at their gross amounts to the individual customer's subsidiary accounts receivable and to the sales journal file. The latter file is accessed monthly by the software to summarize sales by product and to make monthly postings to the general ledger. The subsidiary ledger is used to review customer credit worthiness, to manage collections, and to determine write-offs.