Defining TISAX scope ensures automotive sites, systems, and data flows sit within clear assessment boundaries. Therefore, ParkinsonHowe supports precise scoping aligned to OEM expectations, reducing rework. In addition, structured evidence controls ensure security processes are documented. As a result, assessments run efficiently, validation is clearer, and readiness improves across supply chain operations.
Why scope matters in TISAX
TISAX is built on trust. For that trust to exist, assessors and customers must clearly understand what is included in the assessment and what is not. The TISAX Participant Handbook explains that the assessment scope defines the start and end points of the audit. Any part of an organisation that handles customer information must sit within the scope.
A poorly defined scope can cause problems. If locations, systems, or processes are missed, the assessment result may not meet customer expectations. This often leads to scope changes, extra audit work, and delays. ParkinsonHowe helps organisations define a standard TISAX scope, which is accepted across the automotive industry and avoids unnecessary complications.
Managing evidence the right way
TISAX assessments are based on evidence. Evidence shows that security controls exist and operate as intended. This includes policies, procedures, records, and system outputs. The handbook makes clear that evidence must support the self‑assessment and be available to the audit provider.
Good evidence control means documents are easy to find, up to date, and clearly linked to TISAX requirements. When evidence is structured and consistent, assessors can complete their work more efficiently. This reduces disruption to day‑to‑day operations and supports a smoother assessment process.
Understanding TISAX Assessment Levels
TISAX uses Assessment Levels (AL) to match the depth of assessment to the level of information risk.
AL1 – Self‑assessment
AL1 is a basic internal check. An auditor only confirms that a self‑assessment exists. The content is not reviewed, and no evidence is tested. AL1 results are not used within TISAX and are not accepted by OEMs. It is mainly used for internal preparation.
AL2 – Plausibility‑based assessment
AL2 is the most common level for automotive suppliers. The audit provider reviews the self‑assessment, checks evidence, and interviews key staff, usually remotely. The focus is on whether controls exist and appear suitable. AL2 is used for confidential information where protection needs are high.
AL3 – On‑site verification
AL3 is used where information risk is very high, such as prototype vehicles or strictly confidential data. The auditor verifies controls in depth, including on‑site checks, observations, and detailed interviews. AL3 provides the highest level of assurance and covers all lower levels of assessment.
Linking scope, evidence, and assessment level
The assessment level applies to the highest protection need within the defined scope. This means that scoping decisions directly affect effort, cost, and audit approach. ParkinsonHowe supports organisations in aligning scope, assessment objectives, and evidence so that the selected level is justified, efficient, and accepted the first time.
A well‑defined scope and controlled evidence set the foundation for a successful TISAX assessment. Combined with the correct assessment level, they allow organisations to demonstrate security clearly and confidently across the automotive supply chain.
