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Old 06-01-2020, 07:29 AM   #1
7dau253mrwry4spf
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A warning from epubcheck
I created an epub with calibre. Epubcheck 4.2.2 finds the following warning:

Code:
WARNING (OPF-085): /tmp/tmpcLvCwX/temp.epub/content.opf(14.106): 'dc:identifier' value 'uNEzNk4WVhyXJvFBinoWjG5' is marked as a UUID, but is an invalid UUID.
The warning refers to the following line contained in the "content.opf" file

Code:
<dc:identifier id="uNEzNk4WVhyXJvFBinoWjG5" opf:scheme="uuid">uNEzNk4WVhyXJvFBinoWjG5</ dc:identifier>
Can it be a problem for the epub quality? How do I solve the problem?
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Old 06-01-2020, 09:37 AM   #2
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created it how?
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Old 06-01-2020, 09:40 AM   #3
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Quote:
Originally Posted by 7dau253mrwry4spf View Post
I created an epub with calibre. Epubcheck 4.2.2 finds the following warning:
The primary id of your book is marked as a UUID, but it isn't one. To fix this problem delete the opf:scheme="uuid" attribute from the <dc:identifier> tag.
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