German phrase
Welchen Betreff soll ~ haben?
Meaning
What should the subject of ___ be?
When to use it
Asks what subject to use. It invites a concise, suitable title for a message or document.
Example dialogue
Ich bereite den Visumsantrag vor.
I am preparing the visa application.
Welchen Betreff soll der Visumsantrag haben?
What should the subject of the visa application be?