Hi jeremy002,

Thanks for pointing this out. At the moment option to show Customer column in the Supplier Transaction Lists in QuickBooks Online is unavailable in the current offerings. We'll add this to our product feedback and let our engineers know. We'll keep improving the program to ensure that it will align with your business needs. To keep posted on what's new with QuickBooks Online, you can visit our QuickBooks Blog.

Always know the Community is open and ready to help you with any questions you have. Take care and have a great day!