Transaction is unsuccessful due to a SHA-Out issue

If you or a customer see the warning: Transaction is unsuccessful due to a SHA-Out issue

You need to check what parameters are sent back to the website (This is used the decrypt information about the transaction).

Login to the PostFinance 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:

AAVADDRESS

ACCEPTANCE

COMPLUS

NCERROR

ORDERID

PAYID

STATUS

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