I have to take care of something
Ich muss was erledigen, ich gehe.
I have something to take care of, so I’m leaving.
— The Mermaid (2016)
Ich muss was erledigen, Jungs.
I have something to take care of, guys.
— Der Zauber von Malèna (2000)
Halt kurz an, ich muss was erledigen.
Stop for a moment, I have something to do.