When you have created a metadata group resource you can add metadata to it. When you add metadata you only specify the name and data type of the metadata – metadata values are assigned per document type (see
Assigning values to metadata).
If you add a large number of metadata to a metadata group, irrelevant metadata might be connected to some of the document types that share the same metadata group.
You must select the appropriate data type – Date, Numeric, or Text – when you add a metadata. The data type must conform to the type of data the metadata is intended for.