I am using FOP to produce PDF or PS documents (from a DocBook XML
source converted to FO). For some specific documents, I always end up with the
following error:

[ERROR] file:/home/fevrier/essai.fo:48:206 The id "id2455426" already exists in
this document

I tried to build the FO file with both xsltproc and xalan, with the same
result each time.

The attached files are the minimal DocBook XML file I was able to make that
exhibit this issue and the corresponding FO file.

I am able to work around this issue by adding a blank paragraph (or two) before
the page break solve this issue.

It would seem that this problem happens when a QANDASET (DocBook XML) is over a
page border. However, since fop complains about a duplicate id in the file, and
no id is duplicated in the FO file, it would seem to be a FOP issue.

Thanks.