Thread: Recently learned to run "Extract ISBN" before "Download Metadata". Do U do that too?
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Old 08-08-2020, 02:41 PM   #10
theducks
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Quote:
Originally Posted by droopy View Post
Interesting. Do you mean that there may be a typo to the ISBN? Is that what you mean by "not correct"?
An ISBN 10 has a MOD11 check digit at the end. Calibre used (waaaay back when) to turn that field Red if there was an error. been so long (almost 10Y) , since I used that, I am not sure

ISBN13 is a standard EAN13 check algorithm
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