Error code

Nintendo Switch 9001-0026

NINTENDO SWITCH9001-0026
Game/Platform Error· An error code shown by a game or gaming platform/launcher.

What it means

Your Nintendo Account has not yet accessed the Nintendo eShop from this console..

How to fix it

  1. Link your Nintendo Account to the console you want the content on.
  2. Open the Nintendo eShop on that console at least once.
  3. Retry the purchase or code redemption.

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