A significant change is coming to how SAP BTP’s Authorization and Trust Management (XSUAA) service handles OAuth token retrieval. Effective June 30th, 2026, the HTTP GET method for the `/oauth/token` endpoint will be deprecated. Only the HTTP POST method will be supported, aligning with the OAuth 2.0 specification (RFC 6749).
**What’s Changing?**
Previously, some implementations used a GET request to obtain access tokens, passing parameters in the query string. This non-compliant method is being phased out. The standard, and now exclusively supported, approach involves using a POST request with parameters in the request body (e.g., `grant_type=client_credentials`).
**Impact for SAP Commerce Cloud Developers**
If your SAP Commerce Cloud extensions or custom integrations connect to SAP BTP services – such as SAP AI Core, custom CAP applications, Document Information Extraction, or any other service requiring XSUAA authentication – this change is highly relevant.
While Commerce Cloud’s core handles its own authentication, custom components frequently leverage XSUAA for secure interactions with the broader SAP ecosystem. You must ensure any custom code or libraries you use to acquire OAuth tokens via the `client_credentials` grant type are exclusively using the POST method. Integrations relying on the deprecated GET method will cease to function after the deadline.
**How AI Tools Can Assist Your Transition**
This is where your exploration into AI tooling becomes a practical advantage. AI-powered development tools can significantly streamline the process of identifying and remediating non-compliant code:
* **Code Analysis:** AI-augmented static code analyzers, integrated into your IDE or CI/CD pipelines, can scan your Commerce Cloud codebase (including custom extensions, Java services, and integration layers) to pinpoint instances of GET requests targeting `/oauth/token`.
* **Refactoring Assistance:** Tools like SAP’s Joule, GitHub Copilot, or similar AI coding assistants can not only flag incorrect usage but also suggest or even auto-generate the correct POST-based code snippets, complete with appropriate headers and body content.
* **Proactive Compliance:** Leveraging these tools ensures your integrations remain robust, secure, and compliant with evolving standards, which is crucial for building reliable AI-driven functionalities that often rely on secure data exchange with BTP services.
Don’t wait until the deadline. Start auditing your integrations now. Update any affected code to use the POST method for token retrieval and leverage your AI development tools to make this transition efficient and error-free.
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