Error: Failure in Processing the Payment. Technical Note: The required transaction key is empty! The payment method settings must be reviewed.
Error: Failure in Processing the Payment (ps_authorize)
Okay Folks... I may be trying to make this simple, but here goes. I owe Erik at Sankuru.biz all the credit for this.
If you are not processing a lot of orders a day, then you really don't need need to use the credit card function? Have the order sent to you and then process it manually. Use the PayPal Module and the COD Payment Methods under Shopper instead.
Follow these steps:
Unpublished the Credit Card payment method type, rename the COD to Credit Cards and make sure you check the cards you want to use. Then, make sure you have the discount to 0.00 other wise it will also display. Then publish it. It was that simple!
I hope this helps others.