I was working on a project which needs credit card transaction processing. I had this problem with the Verisign Payflow Pro: “Failed merchant rule check”. Google ain’t much helpful to solve the problem. Here is what you got to do:
Go to https://manager.paypal.com
Sign in with ur Verisign credentials. Don’t panic but paypal and verisign are working together like brothers.
Once you logged in, you can see a neat interface to administer ur account.
Click on ‘Account Administration’
Click on ‘Transaction Settings’ and the set the settings as follows to solve the above problem.
Maximum Amount per Transaction - blank
Maximum Amount for Credits - blank
Allow Non-referenced Credits - YES
Credits may exceed original transaction amount - YES
Allow reference transactions – NO
<http://blogs.vandamme.com/kb/archives/2005/07/failed_merchant.php provides more details.>