Retail, commercial and wealth often have good reasons to measure a metric their own way. Preql documents each unit's definition alongside the enterprise version, each with its own owner and version history, so everyone knows which number answers which question.
1. Different businesses. Each unit built its definition for its own decisions.
2. Enterprise roll-ups. The CFO's report needs one version, and the units disagree on which.
3. Unlabeled variants. Reports show the same metric name with different math behind it.

