Supplier Compliance in the Supply Chain

Why Tier 1 Must Verify Its Tier 2 Labels

In the automotive supply chain, the responsibility for information security does not end at your own company boundaries. OEMs like Volkswagen, BMW, and Mercedes-Benz require their Tier 1 suppliers not only to hold their own TISAX label, but also to demonstrate that the entire supply chain maintains an appropriate security level. This means: if you pass information to your Tier 2 and Tier 3 partners as a Tier 1 supplier, you must ensure that these partners also hold valid TISAX labels.

This requirement is not a recommendation but a contractual obligation embedded in the OEMs' procurement terms. The VDA ISA questionnaire dedicates an entire chapter to supplier management. It explicitly assesses whether you evaluate, monitor, and document the information security of your service providers and sub-suppliers.

The consequences of missing supply chain compliance are significant. If a Tier 2 supplier loses its TISAX label or never had one, this can directly impact your own assessment status. OEMs may require you to name alternative suppliers or remove the affected partner from the supply chain. In the worst case, your own contract with the OEM is at stake because you cannot guarantee end-to-end security across the supply chain.

In practice, monitoring supplier labels is a real challenge. Many Tier 1 suppliers work with 50 to 200 direct suppliers, each with their own labels and different validity periods. Without a structured vendor management system, this quickly becomes unmanageable. Manual tracking lists in Excel are error-prone and offer no automated reminders for expiring labels.

TISAX Label Lifecycle: From Issuance to Renewal

A TISAX label has a validity period of three years. After this period expires, a re-assessment must be conducted to renew the label. The lifecycle of a TISAX label passes through several phases that you need to know and monitor as a supply chain manager:

• Initial Registration: The supplier registers with the ENX Association, defines the assessment scope, and selects an accredited audit provider. This step typically takes 2 to 4 weeks.
• Assessment Execution: The audit provider conducts the assessment (AL2 remotely or AL3 on-site). For findings, there is a remediation period of typically 9 months.
• Label Issuance: After a successful assessment, the label is stored on the ENX portal. The supplier can selectively share their label with chosen partners (label sharing).
• Ongoing Maintenance: During the validity period, the supplier must continuously maintain their ISMS. Significant changes (e.g., new locations, changed processes) may require a scope extension.
• Re-Assessment: The renewal process should start at least 6 months before expiration. A late re-assessment creates a gap during which no valid label exists, which can jeopardize contracts.

For supply chain monitoring, this means: you need to know not only whether your suppliers have a label, but also when it expires, what scope it covers, and whether it meets your contractual requirements. A label with the scope "information security high" is not sufficient if your OEM requires "information security very high."

VDA ISA 6.0: What Is Changing

With version 6.0, the VDA has fundamentally revised the ISA questionnaire. For supply chain compliance, several relevant changes emerge:

• Stronger Focus on Supply Chain Security: VDA ISA 6.0 expands the requirements for supplier management. You must demonstrate that you systematically assess your suppliers' information security risks and integrate them into your own risk management. This goes beyond mere label checking and includes evaluating actual security measures.
• New Cloud Usage Requirements: The increasing use of cloud services in the supply chain is more strongly addressed in VDA ISA 6.0. Suppliers must demonstrate how they ensure information security when using cloud services, including data processing location, encryption, and access controls.
• Extended Incident Response Requirements: The handling of security incidents in the supply chain is regulated in more detail. You are expected to have defined communication channels and escalation processes with your suppliers so that rapid and coordinated responses are possible during an incident.
• Harmonization with ISO 27001:2022: VDA ISA 6.0 considers the updated ISO 27001:2022 and thus facilitates cross-framework mapping. For suppliers implementing both standards, this reduces duplicate effort.

For existing TISAX participants, the transition to VDA ISA 6.0 means that the new requirements will apply at the next re-assessment. An early gap analysis is recommended to avoid surprises during the audit. The expanded supply chain requirements in particular often require new processes and tools.

Supply Chain Monitoring with Kopexa

Manual monitoring of TISAX labels in the supply chain does not scale. Beyond a double-digit number of suppliers, every Excel spreadsheet reaches its limits. Kopexa offers a structured solution specifically designed for the requirements of automotive suppliers:

• Central Vendor Register: All suppliers with their TISAX labels, validity dates, and scope information in one place. You can see at a glance which suppliers are compliant and where action is needed.
• Automated Reminders: Kopexa automatically notifies you when your suppliers' labels are due to expire within the next 6 months. This way you can initiate the renewal process in time and avoid compliance gaps.
• Risk Assessment per Supplier: Beyond pure label tracking, you can perform and document individual risk assessments for each supplier in Kopexa. This meets the extended VDA ISA 6.0 requirements for supplier risk management.
• Audit Trail and Compliance Evidence: Every assessment, every communication, and every status change is documented in an audit-proof manner. During your own TISAX assessment, you can demonstrate to the auditor at any time how you monitor your suppliers.

With Kopexa, you reduce the effort for supply chain monitoring by 40 to 60%. Instead of manual research on the ENX portal and email inquiries, you have all relevant information in a dashboard that stays automatically up to date. Learn more on the vendor management page.

Best Practices for Multi-Tier Compliance

From working with automotive suppliers, the following best practices for successful supply chain compliance management have emerged:

• Communicate Early: Proactively inform your suppliers about TISAX requirements before the OEM asks. Give them enough lead time to prepare for an assessment. 12 months of lead time is ideal, 6 months is the minimum.
• Prioritize Risk-Based: Not every supplier has the same risk profile. Prioritize suppliers that process confidential data or are involved in critical processes. For non-critical suppliers, a lower security level may be sufficient.
• Contractual Anchoring: Include TISAX requirements explicitly in your supplier contracts. Define which assessment level and scope labels you expect, and set deadlines for initial registration and renewal.
• Regular Review Cycles: Review your suppliers' TISAX status at least quarterly. Integrate this review into your existing supplier review meetings to minimize additional effort.
• Offer Support: Smaller suppliers often lack the resources or know-how for a TISAX assessment. Offer help through shared resources, templates, or recommendations for suitable GRC tools. A compliant supplier is in your own interest.
• Define Escalation Processes: Establish what happens when a supplier loses its label or fails to renew on time. Define escalation levels and alternative suppliers to avoid jeopardizing the supply chain.

Further Reading

Deepen your knowledge of supplier compliance with these resources:

• Vendor Management with Kopexa for details on the centralized supplier register
• TISAX for Automotive Suppliers with focus on assessment levels and scoping
• TISAX Content Hub with the complete VDA ISA questionnaire and checklists