Adyen and EBT and P5 only:
The amount that is EBT Food eligible.
When doing a payment where the customer can choose at the terminal to pay with EBT Food, EBT Cash or use a credit card, the "amount" specifies the total possible payment (EBT Food qualifying amounts and non-EBT amounts) and "ebt_amount" specifies the amount that can be used for EBT Food.
If "ebt_amount" is greater than 0, then the customer will be provided the option at the terminal reader to pay with EBT Food, EBT Cash or Credit Card. If they choose EBT Food, they will only be able to pay the "ebt_amount" with that payment method and not the entire "amount". If they choose EBT Cash or credit card, they can pay the entire "amount".
If "payment_method_types" is set to "card_present_ebt_food", then this field is not required as the entire "amount" is assumed to be EBT Food eligible.