For AI agents: the complete documentation index is available at https://mfeflow.github.io/mfeflow/llms.txt, the full documentation bundle is available at https://mfeflow.github.io/mfeflow/llms-full.txt, and this page is available as Markdown at https://mfeflow.github.io/mfeflow/errors/E202.md.
mfeflow

    MFEFLOW_E202

    feature.json is invalid.

    Fix

    Fix the fields listed above. The schema is at https://mfeflow.github.io/mfeflow/schema/feature.json.