This is how it happened:
- I completed Visa Application, got a confirmation number.
- I scheduled an appointment with the US Embassy. I got a confirmation with a barcode which is the same as Visa Application confirmation number.
- Recognized I filled some fields wrong in the Visa Application, corrected them and got another confirmation number which is now different from the barcode in the appointment confirmation.
Do I need to cancel the appointment and reschedule a new one?