| Function | Description | Message Key(s) |
|---|---|---|
| NAQ | QUERY ALL NICB FILES | NAQ |
| NCI | CANCEL IMPOUND RECORD | NCI |
| NDN | NICS DENIAL NOTIFICATION | NDN |
| NDO | NICS DENIAL OVERTURN NOTIFICATION | NDO |
| NEI | ADD IMPOUND RECORD | NEI |
| NIQ | QUERY IMPOUND/EXPORT FILES | NIQ |
| NLFH | NLETS HELP FILES | NLFH |
| NLN | NICS DELAY NOTIFICATION | NLN |
| NPN | NICS PROCEED NOTIFICATION | NPN |
| NUI | MODIFY IMPOUND RECORD | NUI |