German phrase
Welche ~ sind zwingend?
Meaning
Which ___ are required?
When to use it
Asks what is required. It is direct and neutral, often used for documents or proof.
Example dialogue
Welche Unterlagen sind zwingend?
Which documents are required?
Für das Visum sind das Motivationsschreiben und die Notenübersicht zwingend.
For the visa, the motivation letter and transcript are required.