Required Fields for Initiating a Payment {#samsungpay-initiate-mandatory}
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The following fields are required for initiating a payment; include these fields in the `PaymentInfo` class:

> IMPORTANT
> If the required fields are not included, you receive a ` NullPointerException ` error.

Merchant Name
:
The merchant name as it appears on the payment sheet of Samsung Pay and customer's bank statement.

Amount
:

Payment Protocol
:
3-D Secure.

Permitted Card Brands
:
Specify the card brands that are supported such as American Express, JCB, Mastercard, or Visa.

Merchant ID
:

Order Number
:

Shipping Address
:
This field is required if SEND_SHIPPING or NEED_BILLING_AND_SEND_SHIPPING is set for `AddressVisibilityOption`.

Address Visibility Option
:

Card Holder Name
:

Recurring Option
: