# Knowledge base bindings to a workgroup

A binding links a knowledge base site to a Bitrix24 workgroup, and the site becomes that group's knowledge base.

Binding changes the site type to `GROUP`. Removing the binding sets the type to `KNOWLEDGE`, not to the original one. Pages of a bound site are read with `scope=GROUP`. Bitrix24 checks permissions on the group.

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

## Operations

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

Before a write, the site's existence and type are checked. A Bitrix24 refusal is returned as `422`. A successful write returns the state re-read after the operation.

[Sites](../sites)