: v131072 (This corresponds to v1.2.0 in standard version numbering).
To help you "develop a proper piece" for your collection or setup, : 0100926016012800 (This identifies the base game).
If you are managing your library, here is the best way to name and structure the files to ensure they are recognized by management tools (like Tinfoil, DBI, or PC-based managers):
: PowerWash Simulator [0100926016012800][v0].nsp (or .xci) Update : PowerWash Simulator [0100926016012800][v131072].nsp
It looks like you’re referencing a specific and version for PowerWash Simulator on the Nintendo Switch. Usually, when people use this specific naming convention, they are looking for a way to organize, install, or update the game via custom firmware or homebrew tools.
: This specific version was notable for adding the SpongeBob SquarePants Special Pack and various performance fixes. How to Organize Your Files