where do we maintain Planning Hierarchies in PIM or directly in Planning Server
What is the recommendation for maintaining the Product Hierarchy of data in System? Should we maintain in in PIM (Source) or should we maintain in directly in Planning Server?
Also when we maintain hierarchy for say 2000 items, and a user accidentally uploads corrupted data say 1 record, what will happen to the existing data?
1) will the system check and error it out so that existing data is displayed all 2000 records displayed
2) the whole hierarchy is messed up. Nothing is displayed