Talk:User profile fields
From MoodleDocs
It should be clarified that in the Admin>Users>Accounts>New profile fields in Moodle, the short name does NOT include the profile_field_ prefix.
Eg:
In Moodle, in the scenario of wanting to create a new User Profile Field of Date of Birth, the short name would be something like dob.
In the CSV file to be imported, the column heading would have to be profile_field_dob.