How do I make this message stop popping up when I create a check. Message says do I want to prefill info from last check.

 Let me share some insights about the message you're getting when creating a check in QuickBooks Online, @bethh.

QuickBooks remembers the items and payee we've entered and saved before. That's why when we create a new transaction, the system will ask if you'll want to use the last check entry or not.

We can turn this feature off. Here's how:

1. Go to the Gear icon.
2. Choose Account and Settings under Your Company.
   
3. In the Advanced tab, click the Automation edit icon.
4. Remove the checkmark in the Pre-fill forms with previously entered content box.
5. Click Save and then select Done.
   

Once done, you won't be receiving the message when creating a check or any type of transaction in QBO. 

Additionally, to manage your settings, check out this article for more details: Edit company settings in QuickBooks Online. 

Feel at ease to let me know if you have other concerns. I'll be right back to answer all of your questions. Have a blissful day.