Before you start testing, please make sure that your Sales Agent has provided you with valid Test Credentials
Staging: https://test.oppwa.com/v1/payments
Production: https://opwa.com/v1/payments
You can send requests in curl, c#, groovy, java, node.js, php, phyton, ruby, scala, vb.net
See examples here for PCI Compliant Merchants: https://primeiropay.docs.oppwa.com/tutorials/server-to-server
See examples here for non PCI compliant Merchants: https://primeiropay.docs.oppwa.com/tutorials/integration-guide