Scope
Define systems, processes, locations, and contract clauses subject to review, including any exclusions and the business units involved.
A written audit plan creates repeatability, reduces scope creep, and documents due diligence for procurement and compliance reviews. It helps stakeholders agree on success criteria and reduces dispute risk by defining evidence, sampling methods, and acceptance thresholds in advance.
Groups that prepare or rely on the plan include procurement, vendor risk, internal audit, compliance, and legal teams.
The plan also supports executive reporting and can serve as documentary proof for regulators or customers during third-party assessments.
Define systems, processes, locations, and contract clauses subject to review, including any exclusions and the business units involved.
List the audit objectives such as compliance verification, control effectiveness, contractual performance, or data protection, with measurable success criteria.
Specify standards and references (contracts, SLAs, ISO, SOC 2, HIPAA) used to judge compliance and performance.
Identify documents, logs, interviews, and system extracts to collect; include versioning rules and acceptable formats.
Describe sampling frames, selection methods, size, and fieldwork procedures for tests of design and operating effectiveness.
Define report templates, severity ratings, corrective action timelines, and follow-up verification steps.
| Workflow Setting | Recommended Value |
|---|---|
| Authentication Method | Email link + SMS code for suppliers |
| Document Format | PDF/A for signed evidence |
| Audit Trail Capture | Enable IP, timestamp, and action logs |
| Retention Setting | Retain signed records for configured period |
Choose platforms that support secure delivery, signed records, and strong audit trails to preserve evidentiary value.
Many platforms integrate with procurement and document storage systems; when selecting a vendor, confirm TLS encryption, AES-256 at-rest storage, and the ability to generate complete audit trails for each signed record.
Obtain internal sign-off within 7–14 days of draft completion
Begin testing within 14–30 days after approval
Issue initial findings within 14 days of fieldwork completion
Allow 14–30 days for corrective action plans
Finalize within 30 days after receiving supplier responses
Optica conducted scheduled supplier audits to improve consistency across vendors
Tech Data centralized audit plans for strategic suppliers