I’ve been working on integrating Auth0 authentication with SAP Billing and Revenue Innovation Management (BRIM), specifically around the BRSOM component. The setup involves exposing SAP endpoints through a middleware layer to manage authentication and authorization flows using Auth0-issued tokens.
The connection itself works, but I’m running into token validation issues, SAP occasionally rejects valid tokens midway through their lifespan. It doesn’t appear to be an expiry issue; it feels more like an audience or clock synchronization mismatch between Auth0, the API gateway, and SAP.
Since I’ve been exploring this scenario while studying for the C_BRSOM_2020 certification exam, I’ve been using Pass4Future hands-on resources to simulate integration patterns and test authentication flows. It’s been helpfu
l for understanding the structure, but this particular validation inconsistency remains unresolved.
Has anyone here dealt with similar token validation timing issues in enterprise-level SAP integrations? I’d appreciate insights into how you stabilized the authentication cycle or configured token audience claims more effectively.
Thanks in advance
Britanney
Hi there @britanneywiley
I do not have a lot of experience with SAP BRIM applications, however, from what I have been reading from your post, this might be some kind of state mismatch between the Auth0 token and the session handling in the SAP layers.
My personal suggestion would be to check:
- JWKS Caching
- Backend Session Timeouts
- Clock Skew Enforcement
Regarding the JWKS Caching, Auth0 rotates the key periodically, if your SAP application caches them for longer then period in which the keys are being rotated, the application might reject them until the cache is being cleared.
I would also check the time drift of these requests. SAP systems are notoriously strict about timestamp precision. Perhaps if you configure a leeway in your SAP’s middleware to 30-60 seconds, it will allow a buffer window which would prevent valid tokens from being rejected.
Also, make sure you have configured your audience correctly so that your SAP application does not receive opaque tokens. By any chance, have you decoded your tokens using jwt.io or any other method to make sure they are valid?
For some extra stabilization of your application, you can also check the ICF Service timeout settings in the SAP backend and configure your middleware to force re-authentication or clear backend cookies/sessions on failure so that a valid token always triggers a fresh session if the old one died.
Hope somebody else with more experience can also drop some insight on the matter, however, I hope the information above is useful!
Kind Regards,
Nik