Epub validation Error

[fiona86]

Hi everyone, I'm having some trouble fixing one last error in my epub files. The error note says: content.opf(19): attribute "opf:file-as" not allowed here; expected attribute "id" or "xml:lang"

Any ideas on how to fix this?

Thanks in advance!

[Jellby]

In the file "content.opf", line 19, there is an element with "opf:file-as", which is not allowed. Only "id" and "xml:lang" are allowed there.

We'd have to see the "content.opf" file to see exactly what's the problem and how to fix it.

[fiona86]

Hi thanks for the reply. I'm still running into this problem I've included some of the content.opf file below, if anyone has suggestions of how this error can be solved I'd be so grateful!

<?xml version="1.0"  encoding="UTF-8"?>
<package xmlns="http://www.idpf.org/2007/opf" version="2.0" unique-identifier="uuid_id">
  <metadata xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:opf="http://www.idpf.org/2007/opf" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:calibre="http://calibre.kovidgoyal.net/2009/metadata" xmlns:dc="http://purl.org/dc/elements/1.1/">
    <dc:creator opf:role="aut" opf:file-as="author">author</dc:creator>
<dc:creator opf:role="aut">authorl</dc:creator>
<dc:publisher>Publishers</dc:publisher>
    <meta name="calibre:series_index" content="1"/>
    <meta name="calibre:rating" content="10"/>
    <dc:description></dc:description>
    <dc:language>en</dc:language>
    <meta name="calibre:timestamp" content="2011-06-23T11:44:51.909390+00:00"/>
    <dc:title opf:file-as="title">title</dc:title>
    <meta name="cover" content="cover"/>
    <dc:date>2011-06-22T23:00:00+00:00</dc:date>
    <dc:contributor opf:role="bkp">calibre (0.7.28) [http://calibre-ebook.com]</dc:contributor>
    <dc:identifier opf:scheme="ISBN"></dc:identifier>
    <dc:identifier id="uuid_id" opf:scheme="uuid">8e4153bb-af45-4260-8c4a-ea80f95a4c2f</dc:identifier>
    <dc:subject>Thailand</dc:subject>

When I remove the code "opf:file-as" the error still occurs...

[eping]

<dc:title opf:file-as="title">title</dc:title>
Delete opf:file-as="title"
Then it will pass. I have tested.