| id | (optional) string | Schema Attribute Id | [default to undefined] |
| system | (optional) boolean | True if this schema attribute is mandatory on all non-employees sources. | [default to false] |
| modified | (optional) string | When the schema attribute was last modified. | [default to undefined] |
| created | (optional) string | When the schema attribute was created. | [default to undefined] |
| type | Nonemployeeschemaattributetype | | [default to undefined] |
| label | string | Label displayed on the UI for this schema attribute. | [default to undefined] |
| technicalName | string | The technical name of the attribute. Must be unique per source. | [default to undefined] |
| helpText | (optional) string | help text displayed by UI. | [default to undefined] |
| placeholder | (optional) string | Hint text that fills UI box. | [default to undefined] |
| required | (optional) boolean | If true, the schema attribute is required for all non-employees in the source | [default to false] |