Hi becky,
You do not understand correctly. The notification is not from the Wallet application. The notification is located in Settings > Finish Setting Up Your iPhone
As far as I am concerned, I *am* finished setting up my iPhone. The phone in question is a corporate owned phone and all necessary applications are already installed. I have no need to add a credit card as there are no purchases that will be made on the phone and would like purchases to be impossible on this phone for security. However, every day the phone reminds me that I need to finish setting up my iPhone.
I would like to know if it's possible to stop this message, or if the only solution is to add a credit card and remove it later.