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

# Source

Source is used to identify a specific source of data.

## Schema ID

`https://gobl.org/draft-0/cbc/source`

## Properties

| Title | Property | Type | Description |
| - | - | - | - |
| Title | `title` | [i18n.String](/draft-0/i18n/string) | Title stores the name of the source of information. |
| URL | `url` | string | URL is the location of the source of information. |
| Content Type | `content_type` | string | ContentType of the information expected at the URL. |
| At | `at` | [cal.DateTime](/draft-0/cal/date_time) | At is the date and time the information was retrieved. |

## Validation Rules

| Field | Test | Validation Code / Message |
| - | - | - |
| `url` | <ul class="gobl-test"><li class="gobl-test-present">Present</li><li>Url</li></ul> | `GOBL-CBC-SOURCE-01`<br />Url is required and must be a URL |


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