For read operations: the original category level from the provider. For write operations: fallback value used when value is omitted or "unmapped_value". You must ensure this matches the provider's format.
CreateCategoriesApiModelHierarchySourceValueUnion.CreateStr(/* values here */);CreateCategoriesApiModelHierarchySourceValueUnion.CreateNumber(/* values here */);CreateCategoriesApiModelHierarchySourceValueUnion.CreateBoolean(/* values here */);CreateCategoriesApiModelHierarchySourceValueUnion.CreateCreateCategoriesApiModelSourceValueHierarchy(/* values here */);CreateCategoriesApiModelHierarchySourceValueUnion.CreateArrayOfAny(/* values here */);