Thanks for joining this thread, CNR1,

It's possible the expense amount is less than the bill or there's another open bill in the Bill Payment page. See the attached screenshot below for your visual guide.

Make sure to select one bill that matches the expense amount under Credits. Doing this will give you a zero amount.

I'll also appreciate it if you can provide a screenshot so I can see what's going on in your end.

Feel free to visit this video tutorial page to help manage your expenses and vendors.

Keep me posted and tag my name. I'm glad to help get this working for you.