> 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.

# MFEFLOW_E214

A feature option is invalid.

## Fix

Pass a value the feature accepts; `mfeflow features <name>` lists the options.