I felt like I was doing everything right . . . after doing the WA tutorials and re-doing this cart a million times I felt good about the WebAssist steps.
I am using local checkout. I talked with another authorize.net support tech and he said that I should try generating a new transaction ID.
I'm going to give it a go tonight after work and I'll post the results.
Thank you for looking at my steps!
I figured out how to put in the drag and drop error codes you referred to! Here is what I got:
1. Response Code: 3
2. Response Subcode: 1
3. Reason Code: 270
4. Reason Text: (TESTMODE) Line item 1 is invalid
If there are other codes I should apply to further clarify the problem, let me know. I am off to look up the code meanings . . .
Thanks again Ray!