Cause
This error occurs when a request attempts to use the legacy Redirect SCA flow, which is no longer supported.
The legacy redirect-based SCA flow was fully decommissioned on 1 March 2026. As a result, any requests that implicitly rely on this flow will be rejected by the Solaris XS2A API with the following error:
HTTP 403
code: SERVICE_BLOCKED
detail: Redirect Flow is not supported
title: This service is not reachable.
This situation typically occurs if:
The request does not include the required partner configuration ID.
The integration still follows the deprecated redirect-based SCA implementation.
The implementation has not been migrated to the Enhanced (Decoupled) SCA flow.
Solution
To resolve the issue:
Ensure your integration uses the Enhanced (Decoupled) SCA flow.
When initiating AIS or PIS flows, include the partner configuration ID in the request header:
X-Custom-Property-Partner-Id
Verify that the value provided in the header corresponds to a valid partner configuration in the targeted environment.
For implementation details, please refer to the Decoupled SCA guide and FAQ documentation.