Thanks for the answer but according to your answer many attached messages that appear as valid should fail for rule share-28. like message: fpml-4-8-5-rec-1xmlvalidationvalid-testcasesvalid-shared-14-01.xml another question: 2005-11-01T15:38:00Z 2005-11-01T15:38:00Z should be included in validation of share 27 and share 28 do they have to match all the other timezones in the message? Thanks Tamar