Problem validating canonical form of dateTime

Hello,

I'm writting some xsd and xml related files and I encounter some problems
when I try to validate dateTime nodes with your validator (
http://www.w3.org/2001/03/webdata/xsv) : when the dateTime value is writted
with the lexical form (for example "2009-09-09T00:00:00"), the validator is
ok, but when the dateTime value is writted with the canonical form (for
example "2009-09-09", see
http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/#dateTime-lexical-reprand
next paragraph), the validator is not ok.
I have this message :
Invalid per cvc-complex-type.1.2.2: element content failed type check:
2009-09-09 is not a valid dateTime literal

Could you explain my error or correct the problem ?

Best regards,
   Nicolas Voillot BBS Conception    [email protected]
 Tel. : 03 58 05 60 19 12 rue Colbert -  BP 382
63 010 Clermont-Ferrand Cedex 1
Tel. : 04 73 34 96 64
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www.bbsconception.com