| Field | Type | Required? | Description |
|---|---|---|---|
| Class | String | Y | Class of the flow. See Flow Classes. |
| SourceName | String | Y | Name of data source |
| FlowName | String | Y | ID or name of flow in its native source |
| FlowAmount | Numeric | Y | The amount of a given flow in its native unit |
| Unit | String | Y | Unit of flow as provided by source |
| FlowType | String | Y | ELEMENTARY_FLOW, TECHNOSPHERE_FLOW, or WASTE_FLOW. See http://greendelta.github.io/olca-schema/FlowType.html |
| ActivityProducedBy | String | N* | An activity defined by the source producing a flow. |
| ActivityConsumedBy | String | N* | An activity defined by the source receiving/consuming a flow. |
| Compartment | String | Y | Name of compartment to which release goes, e.g. "air", "water", "ground". |
| Location | String | Y | A numeric representation of the activity location, at a national, state, or county level |
| LocationSystem | String | Y | Description and year of the Location code, generally FIPS or ISO, e.g. FIPS_2015 |
| Year | Int | Y | Year of data, e.g. 2010 |
| MeasureofSpread | String | N | A measure of spread of a frequency distribution. Acceptable values are RSD for relative standard deviation (aka coefficient of variation) are SD for the normal (aka 'arithmatic') standard deviation, GSD for geometric standard deviation |
| Spread | Numeric | N | The value for the given measure of spread. |
| DistributionType | String | N | The form of the frequency distribution, if given. Acceptable values are 'NORMAL', 'LOGNORMAL', 'TRIANGULAR', 'UNIFORM'. |
| Min | Numeric | N | The minimum FlowAmount, if provided for the data range. |
| Max | Numeric | N | The maximum FlowAmount, if provided for the data range. |
| DataReliability | Numeric | Y | A score of data reliability based on reporting values associated with the amount. See Data Quality Pedigree Matrix |
| DataCollection | Numeric | Y | A score of data collection based on reporting values associated with the amount. See Data Quality Pedigree Matrix |
| Description | String | Y | Original description of the flow |
*At minimum, either ActivityProducedBy or ActivityConsumedBy must be present. If there is a transfer between activities, both must be present.