# Bill programs: update

URL: /code/mcp/bill/records-update · Id: `page:code/mcp/bill/records-update`

> The Bill Verbs update as MCP do programs, with inputs, result, refusals and an example.

Reference for [Bill](/business/nouns/bill), one group of [Bill programs](/code/mcp/bill).

### Bill.update
Changes the given properties of a Bill. [Verb page](/business/nouns/bill/update?interface=mcp).

```text
do: return await $.Bill.update(input)
```

Emits `Bill.updated`.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | `string` | Yes | The id of the Bill. |
| `organization` | [Organization](/business/nouns/organization) | No | The Organization the Startup owes. |
| `amount` | `money` | No | What the Bill asks for, in its currency. |
| `dueOn` | `date` | No | The date payment is due; an approved Bill is paid on it. |
| `account` | `string` | No | The chart-of-accounts code it is coded to, such as `expense.hosting`. |
| `file` | [File](/business/nouns/file) | No | The File the Bill arrived as: an email attachment or an upload. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `bill` | [Bill](/business/nouns/bill) | Yes | The Bill. |

**Refuses when**

| Check | Error | Fix | Then call |
| --- | --- | --- | --- |
| The key is valid, but its scopes do not allow this operation. | [`forbidden`](/code/api/errors/forbidden) | Use a key whose scopes cover the operation, or ask an owner of the namespace to grant them. | None. |

**Example**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Bill.update({ id: 'bill_Zorj7Zkbtc', organization: 'organization_v0SkRLrXCN' })"
  }
}
```