Due to the COVID-19 global outbreak and health and social measures imposed by several national authorities, ISSN National Centres and their hosting institutions may encounter technical and operational issues. This particular situation may have an impact on the timely management of publishers’ ISSN requests and ISSN assignments. Unfortunately, the ISSN International Centre cannot currently replace impacted ISSN National Centres and manage all ISSN requests and assignments. If ISSN National Centres and their hosting institutions are temporary closed due to this crisis, the ISSN International Centre invites publishers to be patient and renew their requests regularly. We thank you for your understanding.