How can I adjust contractor payments made in December 2023, they are missing and my 1099's show the incorrect amount.

Hello, psaggesedmd. 

When creating 1099s in QuickBooks, it's important to note that the software utilizes the expense accounts that have been mapped to report 1099 transactions. If you notice any discrepancies or inaccuracies in the reported amounts, thoroughly review the contractor payment transactions and the associated accounts. This will help you identify any errors or inconsistencies and take corrective measures to ensure your 1099s are accurate and compliant with the relevant regulations. 

Here's how to check if the account is associated with the expense account:

1. Click the Reports.
2. Enter Transaction List in the search bar, then choose Transaction List by Vendor.
3. Tap the Customize.
4. Set the Report period to Last Year (or Last Calendar Year).
5. Go to the Rows/Columns section. Select the Change columns link, then put a checkmark on the Split box.
6. Go to the Filter section.
7. Check the Vendor box, and from the dropdown, choose 1099 vendors who are in question.
8. Select Run report.
9. Look under the Splits column for what accounts the vendor's transactions were tied to. If you see the word "SPLIT," select the transaction to see details on what accounts were affected. Access the Bill to see what expense accounts were affected if this is a Bill Payment. 

For more detailed steps, please refer to this article: Troubleshoot missing contractors or wrong amounts on 1099s.

On the other hand, to understand how the payment categories for the 1099, check out this article: Understand payment categories for the 1099-MISC and 1099-NEC.

Feel free to revisit the Community if you need help with the 1099 filling. I'll jump right back in to assist further. Have a good one.