Errata exists for this version of the document.
Table 26 defines the structure of the HistoryModifiedData used for the data to return in a HistoryRead when IsReadModified = True.
Table 26 – HistoryModifiedData Details
| Name | Type | Description | 
| HistoryModifiedData | Structure | 
 | 
| dataValues[] | DataValue | An array of values of history data for the Node. The size of the array depends on the requested data parameters. | 
| modificationInfos[] | ModificationInfo | 
 | 
| modificationTime | UtcTime | The time the modification was made. Support for this field is optional. A null shall be returned if it is not defined. | 
| updateType | HistoryUpdateType | The modification type for the item. | 
| userName | String | The name of the user that made the modification. Support for this field is optional. A null shall be returned if it is not defined. |