# Permanent Supporting Documents Object

Permanent documents attributes.

## Attributes

| Name | Type | Description |
| --- | --- | --- |
| created\_at | `Date&Time` | Permanent documents creation date. |
| external\_reference\_id | `string` | Optional identifier for the permanent supporting document in the customer's external system. Maximum length is 100 characters. |

## Relationships

| Name | Type | Description |
| --- | --- | --- |
| template | to-one | [Supporting Document Template Object](../supporting-document-templates/supporting-document-templates-object.html#supporting-document-templates-object-v34). Returns the template linked to the permanent supporting document. |
| identity | to-one | [Identity Object](../identities/identity-object.html#identity-object-v34). Returns the identity linked to the permanent supporting document. |

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