Costumer don't receive any data
Is the agreement correctly set up in the bank?
Have there been any payment initiations?
Is the correct format selected in the bank, and the expected 'mailbox' selected?
500# Internal server error — BEC
This may be caused by the difference in the getBankCertificate call to BEC.
Unlike the other datacenters, BEC send 2 certificates in the getBankCertificate call.
You have to use the second certificate, "bank connect prod".