Comment 3 for bug 196774

The <productseries>/+packaging link allows the user to select any distroseries and any legitimate sourcepackagename regardless of if distroseries already has that package linked.

Once the mistakes is made, any attempt to fix the problem via the UI will cause an oops (bug #352374)
    Retry: duplicate key value violates unique constraint "packaging_uniqueness"

While it is possible to transfer the bad package to another project and series without packaging it cannot be deleted (bug #193469)

Trying to correct this from +addpackaging by leaving an empty sourcepackagename causes an oops (bug #344376) because
the form is not smart enough to know it is required

The user may create multiple packages for different productseries in the same distroseries, which causes two idential packages to be listed in the project page (bug #379017)