# Add Custom Checkout & Registration Fields to PrestaShop 8 & 9 (PO Number, Delivery Date)

> Custom checkout and registration fields for PrestaShop 8 and 9: purchase order number, requested delivery date, verified SIRET, business sector, attachment. Values appear on the order, the PDF invoice, emails, the order list, CSV exports and the webservice API.

- Page: <https://www.datafirefly.com/en/product/custom-checkout-fields-prestashop/>
- Language: en
- Last updated: 2026-09-30
- Platform: PrestaShop
- Category: Checkout & Payment
- SKU: DF-CHECKOUTFIELDS
- Price: 99.00 EUR
- Other languages: [fr](https://www.datafirefly.com/product/custom-checkout-fields-prestashop/index.md), [es](https://www.datafirefly.com/es/producto/custom-checkout-fields-prestashop/index.md), [de](https://www.datafirefly.com/de/produkt/custom-checkout-fields-prestashop/index.md), [it](https://www.datafirefly.com/it/product/custom-checkout-fields-prestashop/index.md), [pl](https://www.datafirefly.com/pl/produkt/custom-checkout-fields-prestashop/index.md), [nl](https://www.datafirefly.com/nl/product/custom-checkout-fields-prestashop/index.md), [pt](https://www.datafirefly.com/pt/produto/custom-checkout-fields-prestashop/index.md)
- Index: <https://www.datafirefly.com/en/product/llms.txt>