# CharacteristicGrammar

object type

The validation grammar (pattern, length) — the value-validation rules a characteristic imposes; pattern is an ECMAScript regex source (compile-checked server-side, <=256 chars).

## Fields

| Field | Type | Notes |
| --- | --- | --- |
| `pattern` | [String](/types/#scalars) | No further notes. |
| `minLength` | [Int](/types/#scalars) | No further notes. |
| `maxLength` | [Int](/types/#scalars) | No further notes. |