Hello, i've a question to identifiers.
If i add an identifier (e. g. url:
https://www.google.com) to a book then this identifier is shown in the book detail window.
If i add an identifier (e. g. zkn:12345, which i use for a numbering system) then this identifier is not shown in the book detail window.
I know, i can create rules to link an identifier to a website, but this is not, what I want to do with this identifier.
Why are these identifiers not shown?
Greetings, Maria