The .nsp.rar extension indicates that this is a digital game package ( .nsp ) compressed into a RAR archive, typically used for or for installation on a modded console. Key Game Details
To use this file on a Nintendo Switch, users typically follow these steps: SD Valis [01000C001901E000][v0][JP].nsp.rar
The code you provided— [01000C001901E000][v0] —is the unique for SD Valis , a retro-style action game for the Nintendo Switch. SD Valis [01000C001901E000][v0][JP].nsp.rar