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v26.3.5

v26.3.5​

Strict mode requires subject sets​

If you run Ory Keto with feature_flags.strict_mode (or the deprecated namespaces.experimental_strict_mode) enabled, creating relationships or checking permissions with a plain subject_id now fails with 400 Bad Request (InvalidArgument over gRPC). Reading and deleting existing subject_id relationships keeps working.

Before upgrading, rewrite subject_id relationships as subject sets or disable strict mode. See the migration guide.