The ISSN is a persistent identifier that identifies periodicals, journals, newspapers, yearbooks, monographic series, and all other types of serial publications.

ISSN code issuance is a fee-based service, with a cost of 30.50 euros (25 euros + 22% VAT) for each request to the Italian ISSN Center.

AlmaDL staff offer ISSN request support for scholarly journals and series published through AlmaDL services.

For scientific journals published through AlmaDL Journals, ISSN attribution can be requested after the publication of the journal's first issue.

Pel series published through AlmaDL services ISSN attribution can be requested after the publication of the second contribution collected in the series.