Hi Sanjay,
the predefined content delivered by SAP is considered as template that might need adjustments according to the actual customer project. We cannpot predict everything what our customers might do or not.
Hierarchies in MDG are identified by the actual root node (hierarchy name). For CCH and PCH there should be one root node having the same value as the standard hierarchy being defined for the actual controlling aresa. Other root nodes are alternative hierarchies.
Best regards
Michael