This identifier is not currently attached to any content. Of course, DOIs can’t actually ever be deleted (they’re persistent!), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where: a) the DOI has been genuinely created in error; and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.