Hi there,
Renaming a Data Item Type uses the ID of the type rather than the name. Also, the ID is shown in the UI instead of the name. See animation in RenameDataItem.gif; I want to create a data item type called Sites (Areas). When I edit the type, its name reverts to its ID as shown in the image. Also, the UI shows the ID rather than the name (Site_Areas instead of Site (Areas).