External Interface Update 1 External Interface Update May 7, 2007 Daryl Shing

External Interface Update 2 Update from the Onsite Meeting Agreed that the best time representation was Option 1b. –1b is compatible with 1a but allows for an optional ‘ending’ time for each TmPoint. This would allows for gaps in schedules. Rejecting submissions by batch is not acceptable to MPs who want only the faulty submissions to be rejected and not the whole batch. –We will be working with the MMS team on options. MPs require a means to uniquely identify transactions that goes beyond the QSE – Date – Instrument – Resource identifiers we have discussed up until now. –We will be working with the MMS team on options. Publish the long list of Web Services to the group. –This list provides background on how we got to the current set of Web Services.

External Interface Update 3 Next Steps Resolving protocol terms in the External Interface Specification. –This is taking longer than expected due to the size and detail of the Specification. Meeting planned with ABB to resolve a number of the open questions regarding MMS processing of Web Services. Return for approval on the External Interface Specification next TPTF meeting on the May 21. –Based on Subgroup recommendation to approve the first two sets of Web Services.