Hi Angela80!
I'm here to assist you in managing your suppliers in QuickBooks Online.
Currently, we're unable to assign a code to a supplier. In setting them up, we can only add a supplier or company name. You'll want to edit and enter a unique code to its name instead.
Also, you'll want to send feedback about this to our developers. Let them know that you need to assign and use a code for your suppliers. Go to the Gear icon and select Feedback.
I added this link if you need help in running financial reports in QuickBooks Online: Run reports in QuickBooks Online. This includes steps on how to customise and save them.
I'm up and open to other questions about vendor transactions. If you need a hand in managing other lists or your data, let me know and I'll lay down some guides or details for you.
