Hello, When I enter the ISSN number in appropriate field I always get message that it is invalid ISSN number.
ISSN 0350‑1426
I put it without dash, with dash etc. but I always get error message that says that ISSN is invalid. When I put that number in Google I found it in many registers for the journal. Please advise
Thanks
Hi @vvucic,
ISSNs need to pass a regular expression, and they also have a built-in checksum. That appears to be a valid ISSN, so maybe it’s the dash – are you copy-pasting it? If so, try re-typing the dash to ensure that it’s not an em-dash or some other character that looks like a dash but isn’t the identical character that’s expected.
Regards,
Alec Smecher
Public Knowledge Project Team
yes, when I typed by hand it appears to be OK. Hmm, pasting is creating difficulties 
Hi all
Cleared the cache and retyped and that worked. Strangely though my colleague, working on another new title copy/pasted an ISSN into her site and that did work. So who knows…