Immutable obligatory indexers
When a view with obligatory columns using indexers is created, the obligatory indexers are created and closed and become impossible to modify.
Consequently, if another view with the same obligatory columns is created in the same DMS, the same indexers are automatically opened but can not be modified.
This can be a problem that might be fixed by giving a different name to the new indexers if a new view is created without being cloned from another view (in which case it makes sense to reopen the same indexers).
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