It depends on fpPaymentPlugin
You have to enable "fpPaymentAuthorize" module
settings.yml
all:
.settings:
enabled_modules:
- fpPaymentAuthorize
You have to create fp_payment_authorize.yml file in to yours config folder and configure it.
fp_payment_authorize.yml
all:
form_hidden_fields:
x_login: 'API Login'
x_tran_key: 'Transaction Key'