> For the complete documentation index, see [llms.txt](https://docs.2checkout.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.2checkout.com/json-rpc-api-reference/json-rpc-api-6.0/api-requests/additional-order-fields.md).

# Additional order fields

Use this object to [create](/json-rpc-api-reference/json-rpc-api-6.0/api-requests/additional-order-fields/add-additional-fields.md) / [update](/json-rpc-api-reference/json-rpc-api-6.0/api-requests/additional-order-fields/update-additional-fields.md) information on additional order/product fields. 

## Request parameters <a href="#parameters" id="parameters"></a>

<table><thead><tr><th width="351.5999755859375">Parameter</th><th>Type / Description</th></tr></thead><tbody><tr><td><code>AdditionalField</code></td><td><strong>Object</strong></td></tr><tr><td><code>AdditionalField.Label</code></td><td><strong>String</strong><br>Field text.</td></tr><tr><td><code>AdditionalField.Code</code></td><td><strong>String</strong><br>Field identifier. Alpha-numeric chars, underscores and dashes.</td></tr><tr><td><code>AdditionalField.Type</code></td><td><p><strong>String</strong></p><p>Field type:</p><ul><li>LISTBOX</li><li>CHECKBOX</li><li>TEXT</li><li>HIDDEN</li></ul></td></tr><tr><td><code>AdditionalField.ApplyTo</code></td><td><p><strong>Sting</strong></p><ul><li>ORDER</li><li>PRODUCT</li></ul></td></tr><tr><td><code>AdditionalField.Values</code></td><td><strong>Array of values</strong><br>Custom values you control.</td></tr><tr><td><code>AdditionalField.ValidationRule</code></td><td><strong>String</strong><br>The validation rule restricting the type of information shoppers can enter in the additional field during the purchase process.</td></tr><tr><td><code>AdditionalField.Translations</code></td><td><strong>Array of objects</strong><br>Details below.</td></tr><tr><td><code>AdditionalField.Translations.Label</code></td><td><strong>String</strong><br>Field text translated in the language of the <code>Translations</code> object.</td></tr><tr><td><code>AdditionalField.Translations.Values</code></td><td><strong>Object</strong><br>Custom values you control translated in the language of the <code>Translations</code> object.</td></tr><tr><td><code>AdditionalField.Translations.Language</code></td><td><strong>String</strong><br>ISO language code. (ISO 639-1 two-letter code).</td></tr></tbody></table>


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