Error code

Nintendo Switch 2123-1502

NINTENDO SWITCH2123-1502
Game/Platform Error· An error code shown by a game or gaming platform/launcher.

What it means

The console could not maintain a persistent connection to the Nintendo servers while downloading or launching software..

How to fix it

  1. Select Continue to attempt the download again a few times.
  2. Restart the console.
  3. Clear the cache on the console.
  4. Test your Internet connection to confirm the console is still online.

Not affiliated with Nintendo Switch. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.