## Update a terminal

Update an existing terminal. Returns the terminal_id.

## Endpoint signature

```http
POST https://api.reservepay.com/merchants/update-terminal HTTP/1.1
Content-Type: application/json
Accept: application/json
Authorization: Bearer <token>

{
  terminal_id: string,
  name: string?,
  external_id: string?,
  installation_id: string?,
  branch_name: string?,
  kiosk_mode: boolean?,
  delegated_terminal_id: string?,
}
```

Returns: string

## Request arguments

### `terminal_id` (string)

**Required**. The terminal ID.

### `name` (string)

_Optional_. New name for the terminal.

### `external_id` (string)

_Optional_. New external ID for the terminal.

### `installation_id` (string)

_Optional_. Installation to associate to the terminal.

### `branch_name` (string)

_Optional_. Branch name to associate to the terminal.

### `kiosk_mode` (boolean)

_Optional_. Whether to enable kiosk mode.

### `delegated_terminal_id` (string)

_Optional_. Terminal ID to delegate payment display to. Send empty string to clear.

## Errors specific to this endpoint

### `NOT_FOUND`

Terminal or installation not found.

### `INVALID_ARGUMENT`

Terminal cannot delegate to itself, the delegated terminal already has a delegation configured or is already used by another terminal, or kiosk_mode cannot be combined with delegated_terminal_id.

## Errors common to all endpoints

### `UNHANDLED_ERROR`

This error occurs when the server encounters an unexpected internal error that
it cannot handle gracefully. This typically happens due to bugs, infrastructure
issues, or edge cases that weren't anticipated during development.

### `INVALID_ARGUMENTS`

This error occurs when the request contains invalid or missing parameters.
Common cases include missing required fields, or values that don't match the
expected format or type.

### `BAD_VERSION`

This error occurs when making requests to an API version that does not exist.
This commonly happens when using an outdated SDK or when the API version
specified in the request URL is incorrect.