iTunes ePub Error About Invalid Prefix

Hi, I've sent a fixed-layout ePub that is travel guide. But I've received error message from iTunes. It says "iTunes error message: Invalid prefix attribute in root (package) element of the OPF file. Please supply a prefix attribute with valid rendition value in root element of the OPF file"


But I can't figure out that can you help me? The same book has been approved by different ePub vendors. I think this is a problem for Apple.


By the way I'm new about creating ePub, so can you tell me simply?



Posted on Sep 10, 2019 1:09 AM

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iTunes ePub Error About Invalid Prefix

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