what is mapping document
Mapping Document. The Mapping Document is a tool used to bridge the gap between exchange data and the data objects reused from the NIEM data model. The Mapping Document is a standardized document used to identify how exchange data aligns to, or âmaps,â and reuses NIEM data objects.The Mapping Document is a local âdata dictionaryâ of NIEM XML data objects, local exchange data objects, and the relationship between the two.he Mapping Document is a tool used to bridge the gap between exchange data and the data objects reused from the NIEM data model.