# ProductGroupSortKey

The set of valid sort keys for product group listings. This enum defines the available sorting options when retrieving product group data.

## Enum Definition

```graphql
enum ProductGroupSortKey {
  TITLE
}
```

## Values

| Value | Description |
|-------|-------------|
| TITLE | Sort product groups by title in alphabetical order |

## Example

```graphql
query {
  productGroups(sortKey: TITLE, first: 10) {
    edges {
      node {
        id
        title
        description
      }
    }
  }
}
```

## Related Types

- [`ProductGroup`](/docs/api/graphql-reference/types#ProductGroup)
- [`ProductGroupConnection`](/docs/api/graphql-reference/types#ProductGroupConnection)
- [`ProductGroupEdge`](/docs/api/graphql-reference/types#ProductGroupEdge)