# Knowledge base menu bindings

A binding links a knowledge base site to a Bitrix24 menu by the menu's internal code and changes that menu for all employees.

Bindings are available only to sites of type `KNOWLEDGE`. Existing menu codes are visible in the bindings list.

Requires the `landing` key scope. Optional query parameter `scope`: `KNOWLEDGE`, `GROUP` or `MAINPAGE`.

## Operations

| Operation | Purpose |
|---|---|
| [List](./menu-bindings/list) | Read bindings with an optional filter |
| [Bind](./menu-bindings/bind) | Create a binding for your site |
| [Unbind](./menu-bindings/unbind) | Remove one binding |

Site existence and type are checked before a write. A Bitrix24 rejection is returned as `422`. A successful write returns the state read back after the operation.

[Sites](../sites)