An internal auditor uses a data query tool in the purchasing process to review the...

In internal auditing, reviewing the vendor master file for authorizations is a test to ensure that only authorized vendors are in the system, which directly relates to the effectiveness of control measures in place. This means verifying that the controls are effective in preventing unauthorized or fraudulent vendors from being added, thereby safeguarding the organization against potential risks such as fraud, unauthorized transactions, or compliance violations.

Institute of Internal Auditors (IIA), International Standards for the Professional Practice of Internal Auditing (Standards), Standard 2120 – Risk Management.