DMNFTF — Reference to DMN elements in XML files may be ambiguous

DMN elements are referenced by their ID with the same file, and by a QName built from a prefix and their ID, where the prefix in the QName must be assigned to the namespace of the Definitions element that contains the referenced element.

However, two different definitions in two different XML files may be in the same namespace: since ID are unique only within their XML file, two different DMN elements can, therefore, have the same reference.

One way to repair that would be by using a bare name XPointer as the value of an XLink href attribute instead, for referencing DMN elements, where the XPointer would consist of the URL of the file containing the Definitions suffixed with the element's ID (separated by #).

Replacement for 12.3.2: Proposes to use href attribute w/o XLink with bare Xpointers to reference DMN elements that may need be referenced across Definitions elements (and thus across XML files).