If you or a customer see the warning: Transaction is unsuccessful due to a SHA-Out issue
Login to the Viveum back office and navigate to here: Configuration > Technical information > Transaction feedback.
You will find the setting under the Dynamic e-Commerce parameters section.
You only want the following in the selected section:
ACCEPTANCE
AMOUNT
BRAND
CARDNO
CN
COMPLUS
CURRENCY
ECI
ED
IP
NCERROR
ORDERID
PAYID
PAYIDSUB
PM
STATUS
TRXDATE