IGG Presentation Networks SAP ISU Upgrade Agenda Scope

IGG Presentation Networks SAP ISU Upgrade

Agenda • Scope of the upgrade project • Milestones • Market system status during the project • Testing phases • Cut over

Scope of the upgrade project • The upgrade of the SAP ISU system from version 4. 6. 4. to ERP 6. 0 is a technical upgrade only • No new functionality will be switched on for the upgrade project • A separate (Development & Test) upgrade landscape will co-exist during the life of the project • Production system changes are minimised during the upgrade project as a result of a system freeze, to support the current design. • No change to XML messaging • No change to Hub systems See-beyond or SAP XI

Milestones • • • Infrastructure Upgrade Build Upgrade development system Build of Test system Unit Testing in Development system Apply Database (DB 2) Upgrade ERP 6. 0 Regression Testing Security Testing completion Dress Rehearsal 1 UAT completion & signoff Pre production testing Dress Rehearsal 2 Go Live 3 August 08 8 August 08 22 August 08 12 September 08 5 October 08 22 December 08 16 January 09 30 January 09 27 February 09 13 March 09 23 March 09 13 April 2009

Testing phases • Development “GAP analysis” Testing Aug - Sept 2008 • Full system regression test Oct - Dec 2008 • Security testing January 2009 • Pre-production tests Jan - Mar 2009 • UAT February 2009 • IPT February 2009 • Dress Rehearsals March 2009 Market message testing will be ongoing between using a test MPCC, and the ESB IT competency centres for Networks and Supply during the Regression testing and the Pre-Production testing phases

Inter Participant Testing • As agreed with Gemserv, IPT is not a requirement for this project • Informal message testing is currently being carried out between the ESB IT competency centres for ESB Networks & ESB Customer Supply • The upgrade project will be upgrading the Market system test environment on the 29 th January 2009 • There is a Market Testing Window available between 9 th to 27 th February • ESB Networks would welcome other Market Participants to re-test market messaging

Cutover Planning • The cutover dates will be Friday 10 th to Monday 13 th April • The step by step cutover plan to cater for the SAP ISU upgrade is currently being developed with timing estimates. • There will be 2 Dress rehearsals to validate and tweak the technical cutover plan. • During cutover, market messages send from Market Participants to Networks will queue in the HUB until the system is restored • Arrangements for data aggregation runs and meter reading processing are currently being planned • Contingency arrangements will be put in place over cutover to revert back to the previous version, should we experience problems.