When documenting findings from a nonstatistical sample, internal auditors should record the factual observations and quantify the results where possible. In this case, the auditor should document that 17% of the sampled accounts receivable balances exceeded the approved unsecured credit limit. This provides a clear, quantifiable basis for the finding, which is critical for accurate reporting and for management to understand the scope of the issue. Documenting this percentage also supports the auditor's conclusions and recommendations for corrective actions.

The Institute of Internal Auditors (IIA) Practice Guide: Audit Sampling.

IIA Standard 2310 - Identifying Information