When Nintendo introduced "seed crypto," they added a secondary decryption step for games. While standard titles only need common keys, newer games (roughly 2015 and later) require a console-unique or title-specific "seed" to be fully playable or decryptable.

Advanced users can extract seeds from nand:/data/ /sysdata/0001000f/00000000 and use SEEDconv to build the binary. Troubleshooting