braintree_gateway/config/var_map.yaml
payment_token: payment_token
amount: amount
city: city
country: country
currency: currency
email: email
phone: phone
first_name: first_name
full_name: full_name
last_name: last_name
order_id: order_id
postal_code: postal_code
state_province: state_province
street_address: street_address
user_ip: user_ip
recurring: recurring
gateway_txn_id: gateway_txn_id
user_name: user_name
device_data: device_data
customer_id: customer_id
gateway_session_id: gateway_session_id
processor_contact_id: processor_contact_id