Thread: Question about dc:identifier
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Old 08-25-2022, 06:15 PM   #2
DNSB
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Quote:
Originally Posted by bookman156 View Post
I have a number of epub 3 files to prepare that are structurally similar. I was thinking of getting one file ready in Sigil with all the fonts and CSS etc and then just saving under another name and swapping the cover and content for each new epub.

But this would mean the dc:identifier number would be the same. I guess this is generated randomly every time Sigil opens. What purpose does the dc:identifier number serve? And could I just change it to something else manually in .opf file for each new epub? Is it necessary to have it at all?
The dc:identifier is a required element and must be unique. See dc:identifer on the EPUB 3.3 candidate draft though that wording hasn't changed much in a decade.
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