| Field | Type | Required? | Description |
|---|---|---|---|
| FlowID | String | Y | The flow id from the inventory source |
| FlowName | String | Y | The flow name from the inventory source |
| Source | String | Y | The standard acronym for the inventory that includes this flow |
| SRS_ID | String | Y | The Substance Registry Service (SRS) substance ID number |
| SRS_CAS | String | N | The Substance Registry Service (SRS) substance CAS number |