Hello there, @GOWYO.
You're right. Mapping accounts on the 1099-NEC play a big role in generating the data you need through the 1099 Detail report. With this, let's check your 1099 account mapping for the Day Rate and Mileage Reimb items. This is to make sure they're mapped to the appropriate account. Let me guide you how.
- Go to the Edit menu.
- Select Preferences.
- Choose the Tax: 1099 menu.
- Click the Company Preferences tab.
- Select the Click here hyperlink to map the accounts.
- Follow the on-screen instructions to complete the process.
I've attached a screenshot below that shows the third to fifth steps.
![81.PNG 81.PNG](https://quickbooks.intuit.com/learn-support/image/serverpage/image-id/63538iBC126B355397A382/image-size/large?v=v2&px=999)
After that, pull up the 1099 Detail report again to check that the update is applied accordingly. Just go to the Reports menu, then select Vendors & Payables.
Additionally, here's an article that answers the most frequently asked questions about Form 1099s in QBO: What is 1099, and do I need to file one?. It includes topics about 1099-NEC, 1099-MISC, and 1099-K.
Also, I'm adding this article to learn more on how QBDT generates reports: Understand reports. It also includes the complete list of available reports along with their description.
Let me know if you have other 1099-NEC concerns or inquiries about paying contractors in QBDT. I'm just around to help. Take care always.