Errata exists for this version of the document.

Setting performInsertReplace = REPLACE_2 replaces entries in the history database at the specified timestamps for one or more HistoricalDataNodes . If no entry exists at the specified timestamp, then the new entry shall not be inserted; otherwise the StatusCode shall indicate Bad_NoEntryExists.

This function is intended to replace existing entries at the specified timestamp, e.g., correct lab data that was improperly processed, but inserted into the history database.