Duplicate enum entries

This warning category is spelled [duplicate-enum-entries] by qmllint.

Enum key X has already been declared

An enum contains two identical entries.

The same key is associated with multiple values. It isn't clear which one will be used.

import QtQuick
Item {
    enum E { A = 0, B = 1, C = 2, A = 3 }
}

To fix this warning, remove or rename duplicate enum entries:

import QtQuick
Item {
    enum E { A = 0, B = 1, C = 2, D = 3 }
}