Articles 40 to 43 of GDPR introduce two voluntary compliance mechanisms that organisations and sectors can adopt to demonstrate adherence to GDPR principles: codes of conduct and certification schemes. Unlike the mandatory compliance obligations that apply to every controller and processor, these mechanisms are optional — but their effects on compliance demonstrability, enforcement risk, and transfer mechanism capability make them operationally significant for organisations that invest in them.
Both mechanisms share a common purpose: providing standardised, independently verified evidence of GDPR compliance that is more credible than self-assessment alone. They also serve a regulatory function — allowing DPAs to set sector-specific standards at scale, rather than adjudicating compliance organisation by organisation.
Codes of Conduct: Article 40
Article 40 empowers associations and representative bodies to prepare and submit codes of conduct that specify how GDPR applies to their sector. A code of conduct translates GDPR’s general principles into sector-specific operational requirements, providing members with concrete guidance on what compliance looks like in their industry context. Once a code is approved by the relevant DPA (and by the EDPB for codes intended to apply across member states), adherence to it constitutes evidence of compliance with the corresponding GDPR obligations.
CODE OF CONDUCT — STRUCTURE AND GOVERNANCE
| Element | Requirement | Purpose |
|---|---|---|
| Scope | Must specify the sector, categories of controllers/processors covered, and the processing activities addressed | Defines who can join and what the code governs; must be specific enough to provide meaningful guidance |
| Substantive obligations | Must specify how GDPR principles apply in the sector context; must set standards at least equivalent to GDPR and may go beyond it | Translates abstract GDPR obligations into concrete operational requirements for the sector |
| Monitoring body | Code must identify an accredited monitoring body responsible for monitoring adherence; monitoring body must be independent | Provides credibility; gives the code its compliance value; must be accredited by DPA |
| Adherence and withdrawal | Must specify how organisations join, maintain adherence, and are suspended or excluded for non-compliance | Ensures membership is meaningful; non-compliant members lose the compliance benefit of adherence |
| Sanctions for non-compliance | Must include effective sanctions for members that breach the code’s requirements | Code is only credible if adherence is enforced; ineffective sanctions undermine the mechanism |
| Complaint and redress mechanism | Must provide a mechanism for data subjects to raise complaints about member organisations’ compliance with the code | Closes the feedback loop; monitoring body must investigate and resolve complaints |
The approval process for a code of conduct requires submission to the competent DPA, which assesses whether the code is in accordance with GDPR and provides a ‘sufficient safeguards’ standard. For codes intended to apply in multiple member states, the EDPB must issue a general opinion before the code can be approved. This process is lengthy but produces a compliance instrument that carries significant regulatory authority.
Benefits of Code Adherence for Controllers and Processors
BENEFITS OF CODE OF CONDUCT ADHERENCE
| Benefit | How It Works | Practical Value |
|---|---|---|
| Compliance evidence in enforcement | Adherence to an approved code is a factor DPAs must take into account in fine-setting (Art. 83(2)(j)) | Demonstrated adherence to a sector code is a meaningful mitigating factor; provides structured evidence that compliance was genuine |
| Transfer mechanism (processors) | Processors that adhere to an approved code with binding commitments can use it as a transfer mechanism for transfers to non-EEA countries under Art. 46(2)(e) | Provides an alternative to SCCs for processor-to-controller or processor-to-processor transfers where an approved code exists in the sector |
| Due diligence simplification | Controllers can use code adherence as evidence of processor compliance under Art. 28’s ‘sufficient guarantees’ requirement | Simplifies vendor assessment: processor adherence to an approved code provides structured assurance without bespoke assessment |
| Sector standard clarity | Code translates abstract GDPR obligations into sector-specific requirements, reducing legal uncertainty | Organisations know what compliance looks like in their specific sector context; reduces over- and under-compliance |
| Competitive differentiation | Public adherence signals to customers, partners, and regulators that the organisation meets a verified standard | Marketing and procurement benefit; procurement gatekeepers may require code adherence for sensitive processing categories |
Certification Schemes: Article 42
Article 42 introduces certification as a mechanism for demonstrating GDPR compliance. Unlike codes of conduct, which are sector-level instruments governing an industry, certification schemes are individual organisation-level mechanisms that result in a certificate awarded to a specific controller or processor confirming that its processing operations meet the criteria of an approved certification scheme. The most well-known example is the EU Cloud Code of Conduct, which has both a code and a certification pathway.
CERTIFICATION SCHEME — REQUIREMENTS AND GOVERNANCE
| Element | Requirement |
|---|---|
| Certification criteria | DPA or EDPB must establish or approve criteria defining what processing must meet for certification; criteria must reflect GDPR requirements; EDPB must adopt guidelines on common criteria |
| Certification body | Certification is granted by accredited certification bodies (accredited by DPA or national accreditation body under ISO 17065 or equivalent); or by the DPA itself |
| Duration | Certificates are valid for a maximum of three years; must be renewed; revoked if holder no longer meets criteria |
| Voluntary nature | Certification is voluntary; does not reduce responsibility; holder remains fully accountable for compliance with GDPR obligations not covered by the scheme |
| Transfer mechanism | Controllers or processors that obtain certification under an approved scheme can use it to transfer data to third countries if certification includes binding commitments from the third-country recipient under Art. 46(2)(f) |
| Publication | DPA maintains a public register of approved certification schemes and accredited certification bodies |
Current Certification Schemes and Notable Examples
As of 2025, GDPR-specific certification schemes remain relatively limited in number, reflecting the complexity of the EDPB approval process and the novelty of the mechanism. However, several schemes have achieved approval or are at advanced stages. Additionally, existing sector certifications such as ISO 27001, SOC 2, and sector-specific schemes provide related — if not directly equivalent — evidence of data protection controls.
GDPR-RELATED CERTIFICATION AND COMPLIANCE SCHEMES
| Scheme | Type | Scope | Relevance to GDPR |
|---|---|---|---|
| EU Cloud Code of Conduct (EU CLOUD CoC) | Code of conduct + certification pathway | Cloud infrastructure and services providers in the EU | Art. 28 processor ‘sufficient guarantees’; transfer mechanism potential; independently monitored |
| CISPE Code of Conduct | Code of conduct | Cloud infrastructure service providers | Art. 28 processor compliance; European DPA approved; major cloud providers adherent |
| ISO 27001 | Security certification (not GDPR-specific) | Information security management system | Not a GDPR Art. 42 certification; but relevant to Art. 32 security measures and processor assessment; widely accepted as evidence of security controls |
| BSI Datenschutz-Gütesiegel (Germany) | Regional DPA certification | Specific IT products and services in Germany | Approved by German DPAs; demonstrates compliance with GDPR in the German context for certified products |
| EuroPriSe | European privacy seal | IT products and services | Independent privacy audit; not a GDPR Art. 42 scheme but pre-GDPR privacy certification with ongoing development |
How to Use Codes and Certifications in Your Compliance Programme
Even where an organisation does not itself adhere to a code or hold a certification, these instruments are useful in the compliance programme in two ways. First, they serve as a due diligence shortcut for processor assessment: a processor that adheres to an approved code provides pre-validated evidence of compliance with the code’s scope, reducing the controller’s own assessment burden. Second, the substantive requirements of approved codes — even those the organisation does not formally join — provide useful benchmarks for what good looks like in that sector.
USING CODES AND CERTIFICATIONS IN PROCESSOR ASSESSMENT
| Processor Status | What It Provides | Controller Action |
|---|---|---|
| Processor adherent to Art. 40 code with Art. 46(2)(e) transfer commitment | Both Art. 28 ‘sufficient guarantees’ evidence AND a Chapter V transfer mechanism (for non-EEA transfers) | Verify current adherence; confirm code scope covers the relevant processing; record reliance in processor register and transfer register |
| Processor holds Art. 42 certification | ‘Sufficient guarantees’ evidence for Art. 28 purposes; transfer mechanism if certification includes binding commitments | Verify certificate validity and expiry; confirm scope; record in processor register; request renewal confirmation |
| Processor holds ISO 27001 (security) | Evidence of security controls relevant to Art. 32; not a GDPR Art. 42 certification | Record in processor assessment; still conduct full DPA review; use ISO cert to reduce scope of security assessment |
| Processor has no code, certification, or ISO 27001 | No pre-validated evidence of compliance | Full vendor privacy assessment required; request security documentation; conduct bespoke DPA gap analysis |
| BITLION INSIGHT | The development of GDPR-specific certification schemes has been slower than the Regulation’s architects anticipated. The approval process is complex, the criteria must be EDPB-consistent, and few certification bodies have yet achieved accreditation. Organisations should watch developments in their sector closely. Where an approved code or scheme exists that covers their processing, adherence provides both compliance value and a structured framework for continuous improvement that self-assessment alone cannot match. |