sap – downgrade sybase sql anywhere from 16 to 12 years

found a problem with one of our programs, which forced me to downgrade to an older version, when I try to load the database via dbsrv
I get the error that the capacity 81 is missing.
the database itself was running on version 12 before.

here is the error message in German:

Error message

Someone knows how I can solve this problem?