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Ecosystem Knowledge Centre

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Copyright: SPRIND, Felix Adler

1. Introduction and overview

The Ecosystem Knowledge Centre is your single source of truth for everything related to Germany’s EUDI Wallet ecosystem. Here, you will find general info and all essential materials and resources to support your onboarding and participation, including detailed onboarding guides, onboarding checklists, technical documentation, use case templates, FAQs and support contacts. Whether you are just getting started or looking to deepen your integration, the Knowledge Centre brings together everything you need in one convenient place.

Dive in and explore all the content at your own pace, or jump straight to a specific section using the quick links below.

Ecosystem vision and fundamentals

Understand the ecosystem vision, principles, and core concepts.

Sandbox readiness check

Check prerequisites and assess readiness for onboarding.

RP onboarding guide

Step by step guidance for relying parties joining the sandbox.

Sandbox support resources

Use case library, FAQs, templates, and support information.

Join the Sandbox community and declare your intent to join the Sandbox

Submit the intent form to receive updates, invitations, and onboarding information.

1.1. What is the sandbox

The EUDI Wallet sandbox is the gateway to the European Digital Identity (EUDI) Wallet ecosystem, an environment designed for testing and innovation aligned with the upcoming production environment. As a key building block of the German government’s EUDI Wallet initiative, it is the first official environment where organizations can test their integrations with the upcoming national EUDI Wallet before full scale deployment.

The sandbox is open to all organizations, public or private, that want to test their use cases, offering the possibility to experiment with test data before going live.

At launch, the sandbox supports digital identification through Person Identification Data (PID), which is the foundation for trusted identity verification under eIDAS 2.0. This initial capability allows participants to validate identity flows, integrate their services with the EUDI Wallet, and ensure compliance with technical and regulatory standards.

As a relying party (RP), you will be among the first to participate if you have a PID use case and when you are technically ready for testing. Your early involvement is key, your feedback will help shape best practices and guide other organizations in preparing for integration before the broader rollout. The Sandbox project team will support interested organizations with guidance on defining PID use cases and preparing for integration.

1.2. The critical role of the sandbox in the national EUDI Wallet ecosystem

The national EUDI Wallet sandbox is a foundational part of the German EUDI Wallet ecosystem. Participation in the sandbox is a mandatory step for any organization aiming to launch services in the live EUDI Wallet environment.

  • The national EUDI Wallet sandbox provides an environment with test data for organizations to validate their digital identity use cases before going into production.
  • Over the upcoming months, the sandbox will be expanded both in functionalities as well as in scale, and the components provided by us will move towards production quality.
  • The sandbox mirrors the core architecture and governance model of the EUDI Wallet, starting with the PID (Person Identification Data) in a first instance.
  • Even after the launch of the production environment, the sandbox will remain a part of the ecosystem and the first point of contact for any RP or issuer.

2. Becoming sandbox ready, first wave, expansion, and how to prepare

The sandbox will initially welcome organizations that are ready to test their PID use cases under realistic conditions, using test data to simulate real world scenarios. These early adopters will validate identity flows, providing valuable feedback to strengthen the ecosystem. Since the ecosystem and the national EUDI Wallet are still under development, the sandbox will act as a collaborative learning space, fostering exchange and preparing for integration of the broader rollout ahead.

Step by step, the sandbox will be opened up to a wider range of organizations, allowing more participants to prepare for the national EUDI Wallet’s public launch.

To evaluate whether your organization is ready to join the sandbox, review the onboarding guide, start planning your use cases, and get ready to join.

2.1. Benefits of participation

Participating in the EUDI Wallet ecosystem offers organizations a range of strategic and operational advantages:

  • Early testing and validation
    Experiment with PID use cases before production and becoming part of the early adopters, positioning your organization at the forefront of digital transformation in the EU. By leveraging the sandbox, organizations can improve their use cases and overall user experience.

  • Participation in a growing digital identity ecosystem
    By joining the sandbox and the EUDI Wallet ecosystem, your organization becomes part of a network of public and private sector entities. You are able to access technical documentation, developer guides, and receive direct support from the EUDI Wallet ecosystem operators. This fosters collaboration, opens new business opportunities, and helps drive the adoption of secure digital identity solutions across Europe.

  • Alignment with EU digital identity regulations (eIDAS)
    Participation enables your organization to prepare processes and technical integrations for alignment with the latest European regulations on digital identity (eIDAS 2.0). This not only supports legal compliance but also positions your organization at the forefront of digital transformation in the EU.

2.2. What is a relying party and how to become one

A relying party (RP) is any organization that verifies digital credentials presented by users through their EUDI Wallet. RPs rely on issuers and the ecosystem’s trust framework to ensure credential authenticity and validity.

If you want to get an overview of existing use cases of relying parties, please check out our use case library in the sandbox support resources.

How to become a relying party
For detailed information about RP onboarding, please check out the RP onboarding guide and refer to the ecosystem vision and fundamentals.

2.3. Scope of support of the national EUDI Wallet sandbox

The sandbox follows a self service support model to ensure scalability and efficient use of public resources. Most early discovery work can be completed independently using the resources available in the Ecosystem Knowledge Centre and our onboarding and developer guides.

What you can expect

  • Structured guidance and resources: The sandbox provides comprehensive documentation, onboarding checklists, technical guides, use case templates, FAQs, and access to support channels. These materials are designed to help you navigate the onboarding process and technical integration independently.
  • Shared support formats: Our team offers structured guidance through group sessions, written documentation, and asynchronous support formats. You can expect help with wallet access and limited debugging support.
  • Collaboration and networking: Participants are encouraged to cooperate, share insights, and learn together. The sandbox fosters a collaborative environment where sector specific working groups help address industry challenges, and knowledge is shared among all participants.
  • Access to test environment: You will have the opportunity to test your use cases in a production like environment using test data, allowing you to refine your solutions before going live.

What you should not expect

  • Individual consulting: While our team is available to answer questions, we cannot offer one on one consulting sessions to develop or refine specific use cases. RPs are expected to use self service materials and established communication channels before requesting additional guidance.
  • Turnkey solutions: Each RP is responsible for developing or sourcing their own software solutions, whether by building in house, using open source components, or engaging external service providers.
  • Full service project management: Organizational and technical contacts must be designated within your team. External service provider discussions and project management are to be handled independently by each organization.

2.4. Who can join the sandbox and become a relying party?

The sandbox is open for companies, public institutions, and technology partners who are interested in exploring wallet functionalities in real world scenarios before full scale deployment.

Before joining the EUDI Wallet sandbox, your organization should ensure it meets several key prerequisites:

  • Location and service: You must be based in Germany and operate a digital service or platform that requires user verification.
  • Defined PID use case: Registration is only possible with a clearly defined use case. Initially, the sandbox supports Person Identification Data (PID) use cases, so your intended service should align with this functionality. If you already have a use case you can use the sandbox readiness check. If you need inspiration, check out our use case library in the sandbox support resources.
  • Internal organization: RPs must allocate budget, technical, and operational resources, and designate organizational and technical contacts. Legal support may be needed, especially for advancing to real use cases later on.
  • Provision of own software: Required software must be developed, supported by open source solutions, or obtained from external providers. Support is available for wallet access and, to a limited extent, debugging, but not for full development.

For a detailed overview of the prerequisites and requirements please check out the RP onboarding guide.

2.5. EUDI Wallet sandbox onboarding steps

The onboarding process for the EUDI Wallet sandbox is structured into an individual onboarding phase, followed by an onboarding with the national EUDI Wallet project team. During individual onboarding you will have access to all sandbox resources. The kick off call marks the pivotal moment when the relying party officially enters the national EUDI Wallet ecosystem.

Visualised Onboarding Process as described below

1. Information stage
Begin your journey by submitting your contact details through our contact form and become part of the sandbox community. This step connects you to the sandbox network, ensuring you receive updates, invitations, and relevant onboarding information.

2. Individual onboarding (for a detailed overview, please refer to the RP onboarding guide)
Explore the Ecosystem Knowledge Centre to understand the ecosystem, onboarding requirements, and eligibility criteria. Use the sandbox readiness checklist to assess your organization’s readiness, including technical, organizational, and compliance aspects.

Support materials:

3. Declare intent to join the Sandbox Submit the RP sandbox form - to be updated - to declare intent of participating in the Sandbox as a Relying Party. After a quick review, the Sandbox team will contact you to outline the next steps and guide you through the onboarding process.

Support materials:

4. Use case definition and submission
Define your organization’s use case for the sandbox, ensuring it aligns with PID functionality and sector specific requirements. Complete the use case template, sent to you by our team and submit it to the project team for review.

Support materials:

5. Kick off call invitation
Upon approval of your use case, you will receive an invitation to the official kick off call. This session marks the formal start of your onboarding and introduces you to the national EUDI Wallet support team and further resources.

Please note that approval of individual use cases is only a temporary measure while we are still ramping up support resources, information material, and technical capacities.

6. Support during process and testing
Throughout onboarding and testing, you will have access to support documentation, FAQs, and group support formats. While individual support calls may be available for specific technical issues, most guidance is provided through self service resources and shared channels.

Support materials:

7. Successful use case implementation
Complete the implementation and validation of your use case in the sandbox. Ensure your solution meets all technical, compliance, and operational requirements, and prepare for transition to production.

3. Updates and support

3.1. Current wave status and outlook

Step by step, the sandbox will be opened up to a wider range of organizations, allowing more participants to prepare for the national EUDI Wallet’s public launch.

3.2. Contact and support

Please consult our FAQ first, as it covers many common questions. If your inquiry remains unanswered, please submit a request through our Support form. The support form is our primary channel for assistance and ensures your request is logged and addressed efficiently.

4. FAQs

1. What is the EUDI Wallet sandbox?
The EUDI Wallet sandbox is Germany’s official test environment for the European Digital Identity (EUDI) Wallet. It allows organizations to test digital identification use cases (Person Identification Data, PID) in a secure, production like setting before full scale deployment. The sandbox is open to both public and private organizations and supports compliance with eIDAS 2.0 regulations.

2. Who can participate in the sandbox?
Participation is open to companies, public institutions, and technology partners based in Germany that operate digital services requiring user verification. To join, your organization needs a clearly defined PID use case and must allocate internal resources (budget, technical, and operational contacts).

3. What are the main benefits of joining?

  • Early testing and validation of digital identity use cases
  • Access to technical documentation, guides, and support
  • Collaboration with a network of public and private sector entities
  • Preparation for compliance with EU digital identity regulations (eIDAS 2.0)

4. How do I become a relying party (RP)?

  • Review the onboarding requirements in the RP onboarding guide
  • Use the sandbox readiness check to assess your organization’s readiness
  • Define your PID use case and submit it for review
  • Complete the onboarding steps, including a kick off call with the project team

5. What support is available for participants?

The sandbox uses a self service support model. Participants have access to comprehensive documentation, onboarding checklists, technical guides, use case templates, FAQs, and support channels. Group sessions and asynchronous support are available, but individual consulting and turnkey solutions are not provided.

6. Where can I find more resources or get help?

All key materials – including the Ecosystem Vision and Fundamentals, RP Onboarding Guide, Sandbox Readiness Check, and Support Resources – are available in the Ecosystem Knowledge Centre. If your question isn't answered in the FAQs, you can submit a request via the Support Form.

Last update: December 19, 2025