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

# IDeclarativeSourceFactReference

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

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

Source of an aggregated fact.

**Signature:**

```typescript
export interface IDeclarativeSourceFactReference 
```

## Properties

| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [operation](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.ideclarativesourcefactreference/index.md#ideclarativesourcefactreferenceoperation) |  | [DeclarativeAggregationOperation](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.declarativeaggregationoperation/index.md) | **_(ALPHA)_** |
| [reference](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.ideclarativesourcefactreference/index.md#ideclarativesourcefactreferencereference) |  | [IDeclarativeSourceReferenceIdentifier](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.ideclarativesourcereferenceidentifier/index.md) | **_(ALPHA)_** |

## Property details

### IDeclarativeSourceFactReference.operation

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
operation: DeclarativeAggregationOperation;
```

### IDeclarativeSourceFactReference.reference

> **Alpha API.** Initial API, highly likely to change outside SemVer. Don't build on it in production. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

**Signature:**

```typescript
reference: IDeclarativeSourceReferenceIdentifier;
```