*Answer not based on Germany.*

The [Code of Federal Regulations](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=610.61) mandates that for all biologics (including vaccines)

>The following items shall appear on the label affixed to each package containing a product: 

>The preservative used and its concentration, or if no preservative is used and the absence of a preservative is a safety factor, the words "no preservative";

>The type and calculated amount of antibiotics added during manufacture; 

>The inactive ingredients when a safety factor, or reference to an enclosed circular containing appropriate information; 

>The adjuvant, if present; 

>The source of the product when a factor in safe administration; 

>The identity of each microorganism used in manufacture, and, where applicable, the production medium and the method of inactivation, or reference to an enclosed circular containing appropriate information; 

This practically means all ingredients (active and inactive) must be listed.