DMN12 — Transitive information requirements maybe inferred from the spec text

Page 60 para 5 says:
"As explained above, every information requirement at the DRG level is associated with a variable used at the decision
logic level. Each variable that is referenced by a decision’s expression must be a variable referenced by one of the
decision’s information requirements or an information requirement in the decision's requirement subgraph."

Page 177 Glossary entry for "Requirement Subgraph" says:
"The directed graph resulting from the transitive closure of the
requirements of a DRG element; i.e., the sub-graph of the DRG
representing all the decision-making required by a particular element"

From these two entries one could erroneously infer that Information Requirement is transitive in nature. This creates serious concerns for BKMs and Decisions Services.

*Review text section 7.1 to remove potential misinterpretation of transitivity due to subgraph def and so it better reflects meta model *

See revised text.