# Custom Fields

The E-Commerce Payment Gateway (EGW) allows merchants to create Custom Fields to collect additional information from customers during the payment process.

Custom Fields enable merchants to include merchant-specific data fields in payment links or checkout pages, helping capture important information related to the transaction.

**Merchants can use Custom Fields to:**

* collect customer information during checkout
* include order references or internal transaction identifiers
* capture delivery details or additional order information
* attach metadata to payments for reporting or reconciliation

**Custom Fields can be:**

* pre-filled by the merchant when generating a payment link; or
* completed by the customer during the checkout process.

**The gateway supports flexible configuration options, including:**

* mandatory or optional fields
* input validation rules (such as minimum or maximum length)
* multilingual field labels for customer-facing forms
* display of fields within the secure hosted checkout page

All captured values are stored as transaction metadata, enabling merchants to associate additional context with each payment while maintaining a seamless checkout experience.