What does it mean when you run the Pledge Billing Summary and people are returned as "No Account Number Available"? These are people who's credit cards have never been declined before and who have credit cards attached to their accounts, so I know it cannot be either one of those things. Thanks!
The way it was explained to me by our IT dept is a communication problem between Tessitura and the credit companies. We have a small number of these when we run our biweekly credit card billing batches, and our solution is to later enter them manually.
I was researching this problem today -- this thread offers some suggested troubleshooting, http://www.tessituranetwork.com/Community/forums/t/477.aspx