Can I put any name I want for Farm Name, or does it have to be a name that I have officially registered somewhere or on a business license?

This is my first year filing a schedule F. I sell eggs and chicks. I do make a profit, though it is very modest. The first question is Farm Name. I have my own name that I like for my poultry operation, but it's not on any legal or official paperwork. Is this just a casual identifier, or do I need to be careful of what I enter for the name?