Duplicate ID error after converting from DOCX to EPUB
After converting a DOCX file to EPUB I frequently get an error which prevents an epubcheck being passed. Running the calibre editor tool 'Check book' I get errors such as:
Duplicate id: toc_id_84 [index_
The offending line in this case would read:
<div id="toc_id_84" style="
It's easily fixed if you understand HTML but might be challenging to those not so familiar with it.
It's not clear if this is a Word problem or the calibre conversion's problem. Sometimes I get one of these errors. at other times I get several.
I'm using the latest version of Word (Office 365). This error has been showing for a long time though.