Latest draft (v4) attached. To be discussed Ability to partially parse during areas of uncertainty. When do discriminators apply on arrays with minOccurs > 0? Array occurrences less that minOccurs are mandatory so are not points of uncertainty. The point of uncertainty starts after minOccurs have been found so that is when the discriminator should be applied. What should the discriminator resolve before minOccurs are found. Maybe the use case for identifiers on discriminators. Alan Powell MP 211, IBM UK Labs, Hursley, Winchester, SO21 2JN, England Notes Id: Alan Powell/UK/IBM email: alan_powell@uk.ibm.com Tel: +44 (0)1962 815073 Fax: +44 (0)1962 816898 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