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 should be profile_field_dob.