entityIdFieldName

The name of the field from the DynamicEntityDataSourceInfo.fields collection containing values that uniquely identify each entity. For example, the track id field with a unique identifier for each track from track-aware data, or the object id field for discrete data. The field name should reference a field in the DynamicEntityDataSourceInfo.fields collection. The values in this field help the underlying data source to associate observations with their related dynamic entities.