Please write down the above code (identifier) now because it will be required by a pre-test counselor.
The questionnaires are anonymous. Therefore, if you forget your code (identifier) you will have to fill in a new questionnaire. The questionnaires can't be traced back to a specific person.
Also, set a PIN to the identifier. If you want to edit the questionnaire for the next visit, you will use this PIN as the password to log in to the questionnaire.