# IRPCObjectTypesAdmin.ChangeObjectTypeItemIcon

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Administration API](https://developer.m-files.com/APIs/gRPC-API/admin/index.md) > [Object type administration](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectTypesAdmin/index.md)

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

Badges: `Administration API / specialized` `admin` `session` `idempotent`

Sets or clears the icon of a value list item.

- **Service:** [Object type administration](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectTypesAdmin/index.md) `MFiles.IRPCObjectTypesAdmin`
- **gRPC method:** `/MFiles.IRPCObjectTypesAdmin/ChangeObjectTypeItemIcon`
- **HTTP (mf-http-grpc):** `POST /grpc/v1/change-object-type-item-icon`
- **Request:** [`ChangeObjectTypeItemIconRequest`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectTypesAdmin/ChangeObjectTypeItemIcon/index.md#request)
- **Response:** [`ChangeObjectTypeItemIconResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectTypesAdmin/ChangeObjectTypeItemIcon/index.md#response)
- **Book and level:** Administration API, specialized
- **Kind:** admin
- **Session:** Required: the session ID from LogIn in the mfiles-session-id-bin metadata.
- **Idempotent:** yes
- **Returns metadata structure version:** no
- **Streaming:** none (unary)

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## Remarks

- Requires `change_metadata_structure` and `license_allows_modifications`.
- Fails with "Access denied." for lists whose items cannot have icons.
- Does not change the metadata structure version: clients see the new icon when they reload the list's
  items.

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## Request: ChangeObjectTypeItemIconRequest

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `obj_id` | [`ObjID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ObjID/index.md) | The item: `type` is the value list ID, `item_id.internal_id` the item ID. |
| `obj_id.type` | `int32` | The object type ID, for example 0 for documents. In a lookup value, the value list ID (for a lookup to objects, the object type ID). |
| `obj_id.item_id` | [`ItemID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ItemID/index.md) | The ID of the object within its type, in `item_id.internal_id`. |
| `obj_id.item_id.internal_id` | `int32` | The ID of the object or value list item. |
| `obj_id.item_id.external_repository_id` | [`ExternalRepositoryID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExternalRepositoryID/index.md) | Used only for objects in external repositories (external connectors). Leave it unset for objects stored in the vault. |
| `icon` | [`Bytes`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.Bytes/index.md) | The new icon, or unset to remove it. |
| `icon.value` | `bytes` | Array of bytes. |

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## Response: ChangeObjectTypeItemIconResponse

No fields.