# `migration.decision_invalid`

Migration decision does not fit its change.

Area 5, [Data](../topics/data.md); not declinable; the next step is usually the agent's.

```jadpo
migration {
    Note.stars: {
        backfill: 9
    }
}
```

```text
error: The decision about `Note.stars` doesn't fit its change
 --> database/migrations/20261020T1401_add_stars/changes.jadpo:3:19
  |
3 |         backfill: 9
  |                   ^ doesn't fit
  reason: This value can't fill `Note.stars`: it is above the field's `max`.
  next: Write `Note.stars: { backfill: <value> }` with a value of its type (agent)
  rule: migration.decision_invalid
  help: https://jadpo.dev/docs/errors/migration.decision_invalid

check failed: 1 error, 4 files
```