Japanese to English Bus/Financial Accounting Audit

Please give me appropriate English words for 現況調査 and 反面調査.
現況調査: Tax office investigators come to your office to have an interview with the president or accounting department. They might want to check cash and sales slips, but they do not check any account ledgers at this point.
反面調査: Your customers, suppliers, banks, and other business partners are investigated to ensure that your accounting records are correct.

Thanks in advance.