German phrase
Ihre Vorgangsnummer lautet ~.
Meaning
Your reference number is ___
When to use it
This gives a reference number. It is a formal way to provide one for an inquiry by phone or email.
Example dialogue
Ich möchte den Status meiner Anfrage wissen.
I would like to know the status of my inquiry.
Ihre Vorgangsnummer lautet 42-07.
Your reference number is 42-07.