| id | classification_Name | dimension | description | reference | meaning_attribute1 | meaning_attribute2 | meaning_attribute3 | meaning_attribute4 | meaning_attribute5 |
| 1 | chemical_elements | 2 | Chemical elements 1-118 | | element name (lowercase) | atomic number | symbol | element name (uppercase) | atomic weight (rough) |
| 2 | regions_iso_iedc | 4 | ISO 3166 classification of states and regions, with custom extensions. Numbers > 10000 are self-defined. | | Name | ISO2 | ISO3 | ISO code | continent |
| 3 | time | 1 | Years 1800-2200 | | Year | | | | |
| 4 | generic_materials_waste | 5 | List of common materials, products, and waste groups | | Material | | | | |
| 5 | NACEv2_(ProdCom) | 6 | List of ProdCom commodities | | Commodity code (NACEv2) | Commodity group name | | | |
| 6 | broad_industry_groups | 7 | List of broad industry groups and general processes (mining, material production, markets, etc.) | | Broad industry group | | | | |
| 7 | general_product_categories | 6 | List of general product categories, residential and non-residential | | Product category | | | | |
| 8 | basic_scenario_alternatives | 9 | High-medium-low scenarios | | Scenario alternatives: High/medium/low, etc. | | | | |
| 9 | ca_time | 1 | Years with ca. prefix | | Ca. year | | | | |
| 10 | general_energy_carriers | 8 | List of general energy carriers | | Energy carrier | | | | |
| 11 | cities_regions | 4 | List of cities | | City name | alternative city name 1 | alternative city name 2 | alternative city name 3 | Country or region ID |
| 12 | service_categories | 11 | List of services | | Service type | | | | |
| 13 | building_types | 6 | List of commonly used building types | | Building type | | | | |
| 14 | time_ranges | 1 | List of time intervals for age cohorts and years | | Range of years or age-cohorts | | | | |
| 15 | custom | 13 | Custom classification, dimension specified via aspect, placeholder only! | | None | | | | |
| 16 | steel_cycle_200R_processes | 7 | List of processes for steel cycle MFA DOI 10.1016/j.resconrec.2012.11.008 | | process_name | process_id | | | process_code |
| 17 | US_LCI_materials | 5 | List of materials (flows) used in US LCI database | | materials and substances list of US LCI database, incomplete (!) | | | | |
| 18 | LCI_material_categories | 5 | List of material categories used in LCI data | | broad material category for LCA (product, elementary, waste) | | | | |
| 19 | US_LCI_material_groups | 5 | List of material groups used in US LCI database | | grouping of flows in US LCI database into categories like 'reference product' or 'air, high population density' | | | | |
| 20 | LCI_data_layers | 12 | List of data layers used in LCI data | | data layers for LCI data (mass, energy, monetary, ?) | | | | |
| 21 | US_LCI_processes | 7 | List of processes used in US LCI database | | Process (activity) names from US LCI database | | | | |
| 22 | UK_IO_17Commodities | 6 | List of 17 commodities used for 2010 aggregated UK IO table in pxp format | | Aggregated industrial sector names of UK IO table | | | | |
| 23 | steel_cycle_200R_materials_products | 6 | materials and products for stocks and flows in dataset for global steel cycle | | material name | | | | |
| 24 | global_steel_cycle_Regions | 4 | regions used in global steel cycle project | | region name | | | | |
| 25 | EXIOBASEv3_163industries | 7 | List of industries for EXIOBASE3, official order and labelling | DOI: 10.1111/jiec.12715 | Code_number | Code_text | Name | | |
| 26 | EXIOBASEv3_163Products | 6 | List of products for EXIOBASE3, official order and labelling, 163 products (1:1 correspondence to industry resolution) | DOI: 10.1111/jiec.12715 | Code_number | Code_text | Name | | |
| 27 | EXIOBASEv3_200Products | 6 | List of products for EXIOBASE3, official order and labelling, 200 products (full resolution) | DOI: 10.1111/jiec.12715 | Code_number | Code_text | Name | | |
| 28 | Economic_indicators | 10 | List of common economic indicators | | Indicator name | | | | |
| 29 | SSP_Models | 9 | List of models used in SSP process | DOI: 10.1016/j.gloenvcha.2016.05.009 | model_name | | | | |
| 30 | SSP_32Regions | 4 | List of 32 SSP regions | DOI: 10.1016/j.gloenvcha.2016.05.009 | region_code | | | | |
| 31 | Population_classes | 9 | List of different population classes: urban, total, … | | class_name | | | | |
| 32 | EXIOBASEv2_48Regions | 4 | List of regions for EXIOBASE2, official order and labelling | DOI: 10.1111/jiec.12715 | country_name | code_2letter | code_3letter | | |
| 33 | NUTS_Regions_2010_Version | 4 | List of regions at NUTS levels 1, 2, and 3, 2010 version of NUTS | https://ec.europa.eu/eurostat/ramon/nomenclatures/index.cfm?TargetUrl=LST_CLS_DLD&StrNom=NUTS_33&StrLanguageCode=EN | NUTS_region_code | | | | NUTS_region_name |
| 34 | 34_EXIOBASEv3_49Regions | 4 | List of regions for EXIOBASE3, official order and labelling | DOI: 10.1111/jiec.12715 | country_name | code_2letter | code_3letter | | |
| 35 | NUTS_Regions_2006_Version | 4 | List of regions at NUTS levels 1, 2, and 3, 2006 version of NUTS | http://database.espon.eu/db2/jsf/DicoSpatialUnits/DicoSpatialUnits_html/ch01s01.html | NUTS_region_code | | | | NUTS_region_name1 |
| 36 | Literature | 13 | List of literature sources and their description | None | literature_id | literature_key | | | authors |
| 37 | YSTAFDB_criticality_regional_scope | 4 | regional scopes of YSTAFDB (Yale stocks and flow database) criticality indicators | None | regional scope | | | | |
| 38 | YSTAFDB_materials | 5 | materials list of the YSTAFDB (Yale stocks and flow database) | None | material_shortname | material_name | material_id | | atomic_weight |
| 39 | YSTAFDB_criticality_timeframe | 1 | time frames of YSTAFDB (Yale stocks and flow database) criticality indicators | None | time frame | | | | |
| 40 | YSTAFDB_criticality_indicators | 12 | YSTAFDB (Yale stocks and flow database) criticality indicators | None | criticality_indicator_name | criticality_indicator_symbol | | | |
| 41 | YSTAFDB_material_groups | 5 | YSTAFDB (Yale stocks and flow database) material groups, for sector split and recycling shares | None | material_group_application | | | | |
| 42 | YSTAFDB_use_phase_layer | 12 | YSTAFDB (Yale stocks and flow database) sector splits and recyclability_layers, described as 'recycling_use_type' in the original YSTAFDB | None | use_phase_and_recyclability_layer | | | | |
| 43 | YSTAFDB_UsePhase_Applications | 7 | YSTAFDB (Yale stocks and flow database) use phase applications | None | use_phase_applications | | | | |
| 44 | YSTAFDB_Time | 1 | YSTAFDB (Yale stocks and flow database) time intervals and years | None | time | | | | |
| 45 | YSTAFDB_Region | 4 | YSTAFDB (Yale stocks and flow database) regions (countries, regions, cities) | None | region | | | | |
| 46 | YSTAFDB_Commodities | 6 | YSTAFDB (Yale stocks and flow database) commodities/product groups | None | commodity | | | | |
| 47 | YSTAFDB_Processes | 7 | YSTAFDB (Yale stocks and flow database) processes | None | process, consisting of [aggregate_subsystem_module];[subsystem_name];[process_name] | | | | |
| 48 | StockChangeLayers | 12 | stock change layers like 'net addition, 'withdrawal', 'deposition' | None | stock change layers like 'net addition, 'withdrawal', 'deposition' | | | | |
| 49 | Wood_MFA_Indonesia_Aryapratama_2019_processes | 7 | processes used in MFA study on wood in Indonesia, by Rio Aryapratama | None | process name | | | | |
| 50 | YSTAFDB_Aggregate_Processes | 7 | YSTAFDB (Yale stocks and flow database) processes, broad classification, 'aggregated system modules' | None | process, consisting of [aggregate_subsystem_module] | | | | |
| 51 | GICS_2018 | 7 | List of products for GICS, official order and labelling, 261 products (1:1 correspondence to industry resolution) | https://www.msci.com/gics | contains the code names and is of the form (at its maximum): 12345678 | | | | includes the name of the sector,industry group, industry, or sub-industry |
| 52 | ISIC_REV2 | 7 | List of products for ISIC, official order and labelling, 278 products (1:1 correspondence to industry resolution) | https://unstats.un.org/unsd/classifications/Econ/ISIC#isic1 | code | | | | specifies the name of the sector,industry group, industry, or sub-industry |
| 53 | ISIC_REV3 | 7 | List of products for ISIC, official order and labelling, 528 products (1:1 correspondence to industry resolution) | https://unstats.un.org/unsd/classifications/Econ/ISIC#isic1 | code | | | | specifies the name of the sector,industry group, industry, or sub-industry |
| 54 | ISIC_REV3.1 | 7 | List of products for ISIC, official order and labelling, 538 products (1:1 correspondence to industry resolution) | https://unstats.un.org/unsd/classifications/Econ/ISIC#isic1 | code | | | | specifies the name of the sector,industry group, industry, or sub-industry |
| 55 | ISIC_REV4 | 7 | List of products for ISIC, official order and labelling, 766 products (1:1 correspondence to industry resolution) | https://unstats.un.org/unsd/classifications/Econ/ISIC#isic1 | code | | | | specifies the name of the sector,industry group, industry, or sub-industry |
| 56 | NACE_REV1.1 | 7 | List of industries for NACE, official order and labelling, 834 products (1:1 correspondence to industry resolution) | https://ec.europa.eu/eurostat/statistics-explained/index.php/Glossary:Statistical_classification_of_economic_activities_in_the_European_Community_(NACE) | code | | | | specifies the name of the sector,industry group, industry, or sub-industry |
| 57 | NACE_REV2 | 7 | List of industries for NACE, official order and labelling, 994 products (1:1 correspondence to industry resolution) | https://ec.europa.eu/eurostat/statistics-explained/index.php/Glossary:Statistical_classification_of_economic_activities_in_the_European_Community_(NACE) | code | | | | specifies the name of the sector,industry group, industry, or sub-industry |
| 58 | CCC | 5 | Common Compilation Categories (CCC) of Natural Resources used by the UNEP IRP MFA Database | http://www.csiro.au/~/media/LWF/Files/CES-Material-Flows_db/Technical-annex-for-Global-Material-Flows-Database.pdf | CCC_Code | | | | CCC_Name |
| 59 | CCC_Commodities | 6 | Commodity list of the Common Compilation Categories (CCC) of Natural Resources used by the UNEP IRP MFA Database | http://www.csiro.au/~/media/LWF/Files/CES-Material-Flows_db/Technical-annex-for-Global-Material-Flows-Database.pdf | CCC Commodity name | | | | CCC_Code |
| 60 | HS_Combined | 6 | List of products for HS, official order and labelling, 7631 products | https://wits.worldbank.org/ | HS Combined code | | | | HS Combined Label |
| 61 | HS0 | 6 | List of products for HS0, official order and labelling,6665 products | https://wits.worldbank.org/ | HS0 code | | | | HS0 Label |
| 62 | HS1 | 6 | List of products for HS1, official order and labelling, 6625 products | https://wits.worldbank.org/ | HS1 code | | | | HS1 Label |
| 63 | HS2 | 6 | List of products for HS2, official order and labelling, 6564 products | https://wits.worldbank.org/ | HS2 code | | | | HS2 Label |
| 64 | HS3 | 6 | List of products for HS3, official order and labelling, 6372 products | https://wits.worldbank.org/ | HS3 code | | | | HS3 Label |
| 65 | HS4 | 6 | List of products for HS4, official order and labelling, 6525 products | https://wits.worldbank.org/ | HS4 code | | | | HS4 Label |
| 66 | SITC 1 | 6 | List of products for SITC 1, official order and labelling, 2364 products | https://wits.worldbank.org/referencedata.html | SITC1 code | | | | SITC1 Label |
| 67 | SITC 2 | 6 | List of products for SITC2, official order and labelling, 3128 products | https://wits.worldbank.org/referencedata.html | SITC2 code | | | | SITC2 Label |
| 68 | SITC 3 | 6 | List of products for SITC 3, official order and labelling, 4632 products | https://wits.worldbank.org/referencedata.html | SITC3 code | | | | SITC3 Label |
| 69 | SITC 4 | 6 | List of products for SITC, official order and labelling, 4013 products | https://wits.worldbank.org/referencedata.html | SITC4 code | | | | SITC4 Label |
| 70 | HS2017 | 6 | List of products for HS2017, official order and labelling, 5359 products | https://www.foreign-trade.com/reference/hscode.htm?code=9706 | HS2017 code | | | | HS2017 Subheading |
| 71 | M49_2020 | 4 | UN Statistics Division Standard country or area codes for statistical use (M49) | https://unstats.un.org/unsd/methodology/m49/ | M49 code | | | | Country or Area |
| 72 | MFA4 | 5 | 4 raw material categories aggregation of the Common Compilation Categories (CCC) of Natural Resources used by the UNEP IRP MFA Database | http://www.csiro.au/~/media/LWF/Files/CES-Material-Flows_db/Technical-annex-for-Global-Material-Flows-Database.pdf | MFA4 | | | | |
| 73 | MFA13 | 5 | 13 raw material categories aggregation of the Common Compilation Categories (CCC) of Natural Resources used by the UNEP IRP MFA Database | http://www.csiro.au/~/media/LWF/Files/CES-Material-Flows_db/Technical-annex-for-Global-Material-Flows-Database.pdf | MFA13 | | | | |
| 74 | SEM_materials_Level2_RECC_v2.5 | 5 | Engineering material groups used by RECC model v2.5, level 2 | None | material group name | None | None | None | None |
| 75 | SEM_waste_scrap_Level2_RECC_v2.5 | 5 | Waste and scrap material groups used by RECC model v2.5, level 2 | None | waste or scrap group name | None | None | None | None |
| 76 | SEM_materials_Level1 | 5 | Classification for aggregate material groups, top level 1, (level 0 - all materials) | None | material group name | None | None | None | None |
| 77 | RECC_v2.4_regions | 4 | regional classification of the RECC model, v2.4 | None | region | | | | |
| 78 | RECC_v2.4_CE_Strategies | 15 | Circular economy and resource efficiency classification of the RECC model, v2.4 | None | scenario involving the roll-out of a certain set of circular economy or resource efficiency strategies | | | | |
| 79 | General_Environmental_Pressure_Indicators | 10 | List of commonly used environmental pressure indicators, for environmental footprints, in miscellaneous units | None | indicator name or label | | | | |
| 80 | built_environment_types | 6 | list of general categories of the built environment, such as light buildings, motorways, railway tunnels, subways, etc. | none | built environment types | | | | |
| 81 | building_components | 6 | list of general types of building components | none | building components | | | | |
| 82 | CIRCOMOD_material_processing_technologies | 7 | List of material processing technologies and components used for database of CIRCOMOD EU project | None | process, technology or component/sub-process | | | | |
| 83 | CIRCOMOD_flowables | 5 | lists all materials, substances, products (vehicles, buildings, etc.), economic flowable objects (subsidies), and social flows (labour), both within industrial system boundary and to other systems (elementar flows) | | flowables | | | | |
| 84 | CIRCOMOD_flowable_categories | 14 | categories flowabels into natural resources, emissions, social input, economic input, materials, and products | | flowable_category | | | | |
| 85 | country_subunits | 4 | provinces and other sub-entities of countries | None | name of province or other sub-entity | 2 or 3 letter code for the sub-entity | | | country |
| 86 | CIRCOMOD_CE_strategies | 15 | Common Circular Economy strategy classifications used in the CIRCOMOD project, taken from CIRCOMOD Vision and Scoping document | | circular_economy_strategy_label | circular_economy_strategy_string | circular_economy_strategy_label+string | | |
| 87 | SSP_Single_Countries_2024 | 4 | List of single country labels in SSP database, 2024 version | https://iiasa.ac.at/models-tools-data/ssp | region_code | | | | |
| 88 | unity_percentiles | 3 | List of percentiles, as string, with decimal dot, from 0.00 to 1.00 in steps of 0.01 | | percentile | | | | |
| 89 | model_native_regions | 4 | list of regions used by different models. For model regions, the naming convention is "[model]|[region]" follows the IIASA scenario data explorer naming convention | none | region or country | alpha 2 country code / [model]|[native region] | alpha 3 country code | | native region label as used by model |
| 90 | components_of_products | 6 | list of components of products | none | component | | | | |
| 91 | HS92 | 6 | list of commodity as in HS92 classification | none | commodity code for HS92 | commodity name for HS92 | | | |
| 92 | organization | 7 | list of different organizations and companies | none | organization | | | | |
| 93 | physical_indicators | 10 | list of different physical indicators, such as energy density etc. | none | physical indicator | | | | |
| 94 | specific_products_technologies | 6 | list of specific products and technologies | none | product name | | | | |
| 95 | CIRCOMOD_end_use_assets | 6 | structured list of end-use goods and assets, including fixed assets, built on the groups 2008 SNA list of fixed assets, adapted to material and energy modelling; houshold end-use goods considered by sectoral models of stock-flow-service nexus transformation | Table 10.2:The capital account - the classification of fixed assets, UN SNA 2008 | asset name | asset name, unique alternative 1 | asset name, unique alternative 2 | | asset group, aggregation 1 |
| 96 | Micro_level_CE_indicators_DACE | 10 | List of relevant indicators for measuring the performance of companies in circular economy across their entire value chain, considering different production stages, from upstream to downstream. | Araujo, J.B., & Viere, T. (2025). Reference List of Micro-Level Circular Economy Indicators. [Microsoft Excel file]. https://doi.org/10.5281/zenodo.15058287 | name of indicator or metric | | | | value chain stage |
| 97 | urban_metabolism_indicators | 10 | List of relevant indicators for measuring the metabolism of cities, including energy and material-related indicator but also land use and socio-economic layers. | | name of indicator or metric | | | | original indicator name, from source where indicator list was compiled from |
| 98 | unity_IDs | 3 | List of ids (e.g., sample Ids), from 1-10000 | | integer_ID | | | | |
| 99 | NZIA_components | 6 | list of components of products and technologies as defined by the EU Net Zero Industry Act (NZIA), amended by other components. | none | component | | | | |
| 100 | NZIA_final_products | 6 | list of final products and technologies as defined by the EU Net Zero Industry Act (NZIA), amended by other products | none | final product | | | | |
|