| Value | Category |
|---|---|
| 1 | Open |
| 2 | Closed |
| 3 | NOP |
| 4 | Deleted (Units found non-existent within 3 years) |
| 5 | NR due to closure but in existence and owner/occupier is not traceable |
| 6 | NR due to non existence and owner is not traceable |
| 7 | NR due to relevant records are with court/Income Tax |
| 8 | NR due to recalcitrant / refuse to submit |
| 9 | NR due to factory under prosecution |
| 10 | NR due to other reasons |
| 17 | Extracted from ASI 1998-99 |
| 18 | Extracted from ASI 1998-99 |
| 20 | Extracted from ASI 1998-99 |