liitettystä
"Liitettystä" is the past passive participle, in the elative case, of the Finnish verb "liittää." The verb "liittää" generally means to attach, join, connect, or append something to something else. Therefore, "liitettystä" describes something that has been attached, joined, connected, or appended. The elative case, indicated by the "-stä" ending, signifies movement or origin from within, or in this context, it often implies "from that which has been attached" or "concerning that which has been attached."
For example, in a sentence like "Tiedoista kerrotaan liitetystä dokumentista," the phrase "liitetystä dokumentista" would translate