Thanks for getting back to me, @Alejandra1.

I can help make the vendor marked as eligible for 1099 appear on the form.

Since you’re done with the first step in getting their name on the list. Next would be to make sure that the contractor (vendor) meets the following criteria:
•    Vendors are paid via cash or check.
•    Payments should reach the $600 or more thresholds for 1099.
•    Check if the accounts used on the vendor’s transactions are mapped for 1099. This includes the accounts of the items used on the transactions.

Here’s how to map the accounts:
1.    Go to Expenses on the left panel and select Vendors.
2.    Select Prepare 1099s next to New Vendor on the upper right-hand corner.
3.    Click Let’s get started or Continue your 1099s.
4.    Complete your company details, then click Next.
5.    Check the box for Box 7: Nonemployee Compensation.
6.    Choose all the accounts that were used on the transactions in the drop-down.
7.    Hit Next, then follow the prompt to finish preparing 1099s.

Refer to this article for more details: Why are some contractors missing from my list of 1099 vendors.

That should do it. Please let me know if there’s anything else you need, I want to ensure your success. Thanks for reaching out and take care!