Is't possible to define our structured attribute syntax definitions in the
eDirectory Schema? I can't find any existing attribute definitions that
matches my needs.

On a User or Person (Employment) object I need a relation between a O/OU
(Scope) and a Person (Role).

The attribute should be multivalue with the following structure definition:

API Data Structure
typedef struct
pnstr8 objectNameScope;
pnstr8 objectNameRole;
} Typed_RoleAsso_T;