Please add to the gradle.properties file in APP level the values for the following variables as provided by Nets:
#test merchant ID
MERCHANT_ID_TEST= "YOUR TEST NETAXEPT MERCHANT ID HERE"
MERCHANT_BACKEND_URL_TEST="https://yourtestbackendbaseurlhere/"
#prod merchant ID
MERCHANT_ID_PROD="YOUR PRODUCTION NETAXEPT MERCHANT ID HERE"
MERCHANT_BACKEND_URL_PROD="https://yourproductionbackendbaseurlhere/"