UMF documents are the collection of UMF segments that are used
to load, modify, query, or request data from the entity database.
There are two different types of UMF documents:
- UMF input documents
- The collection of UMF segments that structure the incoming data to load,
modify, or query data in the entity database.
- UMF output documents
- The collection of UMF segments that structure result data.