Parent-Child Conflict in Demantra

Hi,

we are doing a Demantra implementation for a Retail customer

we have configured the item hierarchy as

Category->Product Family->Product Subfamily->Brand->type->Size ->SKU

on doing so, there are scenarios where the same product subfamily is assigned to multiple product families. so this errors out as a parent-child conflict. we tried concatenating Product Subfamily to Product family, but then there are so many records where the same size is assigned to multiple Brands/types/Product Subfamily.

Is there a solution available to deal this kind of scenarios for retail industry in demantra? Pls. let me know on this.