> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/api/graphql/data-access/mutations/set-data-object-catalog-system.md).

# setDataObjectCatalogSystem

Assign (or clear) the Collibra Catalog system asset on a data object that is a catalog system anchor (a data object whose type matches the catalogSystemDataObjectType set on the data source). Pass null as catalogSystemId to clear the assignment.

```graphql
setDataObjectCatalogSystem(
  catalogSystemId: UUID
  dataObject: ID!
): DataObjectResult!
```

### Arguments

#### catalogSystemId ● [`UUID`](/api/graphql/data-access/scalars/uuid.md) scalar <a href="#catalog-system-id" id="catalog-system-id"></a>

#### dataObject ● [`ID!`](/api/graphql/data-access/scalars/id.md) non-null scalar <a href="#data-object" id="data-object"></a>

### Type

#### [`DataObjectResult`](/api/graphql/data-access/unions/data-object-result.md) union