> ## Documentation Index
> Fetch the complete documentation index at: https://gobl-regime-code.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Attachment

An Attachment provides a structure to be used to attach documents inside a GOBL document, either as a reference via a URL, or directly as a base64 encoded string.

## Schema ID

`https://gobl.org/draft-0/org/attachment`

## Properties

| Title       | Property      | Type                                | Req. | Description                                                                            |
| ----------- | ------------- | ----------------------------------- | ---- | -------------------------------------------------------------------------------------- |
| UUID        | `uuid`        | string                              |      | Universally Unique Identifier.                                                         |
| Key         | `key`         | [cbc.Key](/draft-0/cbc/key)         |      | Key used to identify the attachment inside the document.                               |
| Code        | `code`        | [cbc.Code](/draft-0/cbc/code)       |      | Code used to identify the payload of the attachment.                                   |
| Name        | `name`        | string                              |      | Filename of the attachment, will override name retrieved from URL.                     |
| Description | `description` | string                              |      | Details of why the attachment is being included and details on what it contains.       |
| URL         | `url`         | string                              | true | URL of where to find the attachment.                                                   |
| Digest      | `digest`      | [dsig.Digest](/draft-0/dsig/digest) |      | Digest is used to verify the integrity of the attachment when downloaded from the URL. |
| MIME Type   | `mime`        | string                              |      | MIME type of the attachment.                                                           |