TurboTax wants me to add a Principal Business code for my child's FFA project

TurboTax wants me to add a Principal Business code for my child's FFA project but that wasn't a business.

She received a 1099-MISC from the school district for the proceeds from the sale of the animal and the add-ons (donations). That's not a business.

 

PS: She had a net loss from the FFA project.