> Documentation index: https://www.gooddata.ai/docs/gooddata-ui/llms.txt lists every page of these docs as Markdown.

# IStringParameterConstraints

- Package: [@gooddata/sdk-model](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/index.md)
- Kind: interface
- Source: https://github.com/gooddata/gooddata-ui-sdk/blob/rel/11.64/libs/sdk-model/src/ldm/metadata/parameter/index.ts

String parameter constraints.

**Signature:**

```typescript
export interface IStringParameterConstraints 
```

## Properties

| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [allowedValues?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.istringparameterconstraints/index.md#istringparameterconstraintsallowedvalues) |  | [IParameterAllowedValue](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.iparameterallowedvalue/index.md)[] | _(Optional)_ |
| [maxLength?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.istringparameterconstraints/index.md#istringparameterconstraintsmaxlength) |  | number | _(Optional)_ |
| [minLength?](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.istringparameterconstraints/index.md#istringparameterconstraintsminlength) |  | number | _(Optional)_ |

## Property details

### IStringParameterConstraints.allowedValues

**Signature:**

```typescript
allowedValues?: IParameterAllowedValue[];
```

### IStringParameterConstraints.maxLength

**Signature:**

```typescript
maxLength?: number;
```

### IStringParameterConstraints.minLength

**Signature:**

```typescript
minLength?: number;
```