Diagnosis
The table key &V1& is unique and &V2& is not unique. However, thecomponents of &V1& are a subset of &V2&, which means that &V1& is moreselective than &V2&.
INCLUDE INCL_MIGRATION_SCENARIO
Check whether both keys are really needed or if one of the keys can beremoved.
The message is also issued if &V2& is a generic primary key whoseuniqueness is unknown. In this case, the worst case scenario is assumed(that the primary key is not unique). However, since the uniquesecondary key is a subset of the primary key at the same time, theprimary key must be unique. Check the definition of the primary key anddefine it as unique if appropriate.