Для привязки "<var>X</var>" из пространства имен "<var>namespace</var>" в атрибуте "<var>Y</var>" перечисляется более одной части одного из элементов расширяемости.

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One of the extensibility elements on Binding '<var>X</var>' from namespace '<var>namespace</var>' has more then one part listed in the '<var>Y</var>' attribute.

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