यह page उन official files को track करता है जिनके बिना HSN, SAC, CPC, InSCED या ISCED old-version lookup pages generate नहीं किए जाते. Pending sources को proven mapping नहीं माना जाता.
Historical concordance pages are generated only when official source files are available locally. Pending files are shown as source requirements, not as proven mappings.
| Layer | Bridge | Status | Local file | Official source |
|---|---|---|---|---|
| HSN / ITC-HS | HS 2022 to HS 2017 | pending | data/sources/concordance/hs/HS2022-to-HS2017.xlsx | UNSD / WCO |
| HSN / ITC-HS | HS 2022 to HS 2012/2007/2002/1996/1992 | pending | data/sources/concordance/hs/ | UNSD |
| SAC | SAC to CPC | pending | data/sources/concordance/cpc/ | CBIC / UNSD |
| InSCED | InSCED to ISCED | pending | data/sources/concordance/isced/ | Ministry of Education / UNESCO UIS |