1. In the tenant Back Office, go to Settings>Administration>Payment.
2. Next, choose Express as the payment processor. A series of empty fields will appear.
3. Enter the following information into each respective field:
Express URL: https://certtransaction.elementexpress.com/
Express Account ID: 1048450
Express Account Token: 16BB39C6DFED1810EC31A3E876D6E36B75F62CAC7021C85D2EF92AFE563AAB75D9DAFB01
Express Application ID: 8577
Express Acceptor ID: 3928907
4. Make sure you save the changes before leaving this screen.
5. At the POS terminal, make sure the EMV reader is properly connected to the iPad on the local network.
6. Restart the ACME Sales app for the changes to take effect.
Test Express cards should now work with your EMV card reader and your Sales app in a sandbox.