Errata 2.22 says that textStandardDecimalSeparator must be set if pattern contains a '.' but it must also be set if the pattern contains 'E' or '@' as these on their own can cause a decimal separator to be output (due to use of significant digits logic). Errata needs to be updated to reflect this. Regards Steve Hanson Architect, Data Format Description Language (DFDL) Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh@uk.ibm.com tel:+44-1962-815848 Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU