[oXygen-user] xml:id + docbook5 validation problems

Jirka Kosek
Sun Jun 28 16:47:51 CDT 2009

Robert Nagle wrote:

> SystemID: I:\My Documents\xml\rj3\er1.xml
> Engine name: oNVDL
> Severity: error
> Description: bad value for attribute "id" from namespace
> "http://www.w3.org/XML/1998/namespace"
> Start location: 2:80
> *******************************
> here is what I have in the er1.xml file:
> <?xml version="1.0" encoding="UTF-8"?>
> <chapter  xmlns="http://docbook.org/ns/docbook"   version="5.0" xml:id="99er1">

IDs must start with letter (or underscore and few other characters) but
not with number. This is cause of your error.

  Jirka Kosek      e-mail:       http://xmlguru.cz
       Professional XML consulting and training services
  DocBook customization, custom XSLT/XSL-FO document processing
 OASIS DocBook TC member, W3C Invited Expert, ISO JTC1/SC34 member

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