Symptom:
During submission to eBay, the user gets a "21917158 - A payment method has to be set up so you can continue to sell on eBay." error.
Background:
eBay requires users to have a valid payment method on their account.
Cause:
This message is coming directly from eBay. They are having trouble using your existing payment method, though it is unclear what the issue may be.
Solution:
Make sure you double-check your payment method including validating and credit card expiration dates. If you can't find the source of the problem, try to log into your eBay.com account and click the 'Sell' tab at the top and just run through the steps to make a dummy listing. If eBay has any requirements they want you to fulfill before you can list more items, they will prompt you for this information in the process of creating a new listing.
