Each successful submission of a notification costs one NAPIT web credit.

If you need to buy more NAPIT web credits you can do so from the NAPIT web site.

If, when you log in, NAPIT Desktop tells you that you have web credits available, when you come to actually submit the notification those web credits may have been used up by colleagues who also have the same NAPIT membership number.

Even if a web credit isn't available you can still save your notification and then submit it later when a web credit is available.