Breakdown of Bezüglich des Schadensfalls ist das Dokument gestern geschickt worden.
sein
to be
schicken
to send
gestern
yesterday
das Dokument
the document
Questions & Answers about Bezüglich des Schadensfalls ist das Dokument gestern geschickt worden.
Why does Schadensfall take the form des Schadensfalls here?
The preposition bezüglich (regarding) is a formal preposition that requires the genitive case. Since the base noun is der Fall (a masculine noun), the definite article changes to des and the noun gets an -s added to the end, resulting in des Schadensfalls.
What are the two "s"s doing in the word Schadensfalls?
The first "s" is a connecting letter (often called a linking "s") that joins the two nouns making up this compound: der Schaden (the damage) and der Fall (the case). The second "s" at the very end is the genitive case ending triggered by the preposition bezüglich.
Why does the sentence use ist ... geschickt worden instead of just wurde geschickt?
This is the passive voice in the conversational past tense (Perfekt). While wurde geschickt (simple past) is very common in formal writing, ist ... geschickt worden is heavily used in spoken German for recent events, like something sent gestern (yesterday). Note that in the Perfekt passive, we drop the "ge-" from geworden and just use worden.
Why is ist placed where it is, considering it is the fourth word in the sentence?