The post title field is always required to be in the form
Generate title input and how it works
Sometimes you need to hide the title and generate it using the data the user provides in the form. In that case, you can use or name of the taxonomy like [category] or use the name of the custom field you added in the form like [email]
Examples:
Car History of [year] - [model] | [vin]Company [job_hiring_organization] hiring [job_vacancy_name]Do not forget to hide post title field so users will not be confused:
