Why do I get an Error Message when Attempting to Purchase Databases on flyGarmin for a GNC 355?

Aircraft shows a system ID of A31005C8B0C2E:

• A GNC® 355 radio with a system ID of A31005C8B0C2E indicates that your configuration module has failed or not installed correctly.

What is a System ID?

• The system ID is generated by a configuration module that is part of the back plate.  The system ID is a unique number that is not repeated in other aircraft.

How to Find Your System ID:

• The system ID can only be found while sitting inside the aircraft.
• On the GNC 355:
  1. Select System.
  2. System Status.
  3. The system ID will be listed at the top of the page.

Solutions

• Certified Aircraft:
  • You will need to visit a Garmin Aviation Dealer so that they can investigate your GNC 355's configuration module and generate a new system ID.
• Experimental Aircraft:
  • Visit a Garmin Aviation Dealer to investigate your GNC 355"s configuration module or contact Garmin Aviation Support.
• See How can I Find a Garmin Aviation Dealer? for assistance with locating a Garmin Aviation Dealer in your area.