# StructureItemGroup

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Reference](https://developer.m-files.com/APIs/gRPC-API/Reference/index.md) > [Messages](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.StructureItemGroup/

A structure that specifies a single metadata structure item.

- **Full name:** `MFiles.StructureItemGroup`
- **Proto file:** [`mfiles/structs.proto`](https://developer.m-files.com/APIs/gRPC-API/downloads/proto/mfiles/structs.proto)

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## Fields

| Field | Type | Number | Description |
|---|---|---|---|
| <a id="f-type"></a>`type` | [`StructureItemGroupType`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.StructureItemGroupType/index.md) | 1 | The type of the selected group. The value esigtNone means that an individual element is selected (or all items), instead a group of items. Values: `STRUCTURE_ITEM_GROUP_TYPE_NONE` (0), `STRUCTURE_ITEM_GROUP_TYPE_BUILT_IN` (1), `STRUCTURE_ITEM_GROUP_TYPE_USER_DEFINED` (2), `STRUCTURE_ITEM_GROUP_TYPE_VIEWS_BY_SELECTED_USER` (3), `STRUCTURE_ITEM_GROUP_TYPE_HANDLERS_OF_SELECTED_EVENT_HANDLER_TYPE` (4). |
| <a id="f-parameter"></a>`parameter` | [`StructItemGroupParameterUnion`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.StructItemGroupParameterUnion/index.md) | 2 | If there can be several items in the selected group type (e.g. user id's), the value is defined here. |

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## Used in fields

- [`ExportStructureItem.group_selection`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExportStructureItem/index.md#f-group_selection): The group selection inside of an item type