To create a dimension map, Disclosure Management requires that the domain/domain member can be associated with a valid taxonomy concept. The XBRL specification for dimensions defines a binding relationship between a taxonomy concept and a domain member. The only exception is default dimension members; these can be associated with any taxonomy concept. Note that not all taxonomies define default dimensions.
Prerequisites for creating a dimension map are:
Existing Concept Map—You must first map a taxonomy concept before creating a dimension map. Domain and domain member mapping cannot occur on Office data that does not have an existing taxonomy concept map.
Primary Item Compatibility—The mapped primary item must be compatible with the given domain or domain member. Every primary item defines the dimensionality that can be associated with it. For example, the domain “East” may be mapped to the data that is also mapped to the concept “GrossProfit”. However; “East” may not be mapped to data that is also mapped to the concept “CompanyName”.