Auditing confirmation is a special type of Inquiry which is used extensively among auditors and is considered by them as one of the most convincing auditing evidence. It normally consists of getting written confirmation from the third party with regard to account balance, the detailed components and conditions and details of transactions.
The more reliable and convincible the auditing evidence obtained from the applied methods are, the auditor's opinion will be more suitable.
For instance, the auditing evidence obtained from external resources may not be reliable because they have been got from persons who lack enough knowledge and awareness of the subject or their information may be biased and even incorrect.