I am working on 1099s and I accidently mapped a vendor for a 1099NEC instead of a 1099Misc and now I can't change it. How do I unmap and make it correct?

Thank you for reaching out, Cheryl. I'll help you rectify a vendor for 1099NEC and set them up for 1099MISC while ensuring your filing stays accurate in QuickBooks Desktop (QBDT).

When getting ready to file 1099s in QBDT, you can return or revisit the account selection section or map accounts for your vendors. If you need to adjust the account mapping for a particular vendor, click the Back button to return to the previous page or the Map Accounts section. I'll outline the steps to get you going: 

1. Access your QuickBooks Desktop company.
2. Go to the Vendors menu and select 1099 Forms.
3. Click Print/E-file 1099 Forms.
4. Select Get started in the Form 1099-MISC.
5. Choose the vendor and then click Continue.
6. Verify the 1099 information and then click Continue.
7. In the account mapping section, click the Dropdown button beside Show1099 accounts and select show all accounts.
8. Locate the account that you want to correct and then select the correct one. 
9. Once done, click Continue.
10. Follow the on-screen instruction to complete the process.

For visual reference, see the image below.

If you've already filed it, you'll want to confirm if the IRS has accepted your 1099 before you can start processing the corrections when mapping a vendor. For more details, please see this handy article: Correct or change 1099s in QuickBooks.

In addition, here's an article to guide you in printing 1099 forms in QBDT: Print your 1099 and 1096 forms.

Feel free to communicate with me in the comment section if you have other inquiries related to QuickBooks or navigating your way through 1099s. I can assure you that I'll be around to lend a helping hand. Keep safe.