Diagnosis
The BP roles &V1& and &V3& are assigned to a role exclusion group,meaning that a permitted transition is defined between these two roles.
The validity of the BP roles may not overlap. Since a transition betweenthe BP roles exists, the validity start of the BP role &V3& can howeverbe directly adjacent to the validity end of the BP role &V1&; or thevalidity end of the BP role &V3& can be directly adjacent to thevalidity start of the BP role &V1&.