NOTICE DATE: September 20, 2013 NOTICE TYPE: M-A082313-03 Release - Retail/Wholesale SHORT DESCRIPTION: Implementation of market-facing changes for September 2013 - Removal of NPRR416 INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: September 23 - 27, 2013 LONG DESCRIPTION: ERCOT will be implementing a number of market-facing changes in the production environment on September 23 - 27, 2013. Please see the attached spreadsheet for the description and estimate of the release date for each change. Please note that the attached list of market-facing changes has been revised to remove NPRR416. Please see M-B113012-05 for more details. ADDITIONAL INFORMATION: ERCOT may experience intermittent service interruptions during the implementation period. The systems include, but are not limited to: * Market Participant notifications * Outage Scheduler User Interface o During this outage, please use https://mis.ercot.com/osrui/osrui/Summary.action to directly access the Outage Scheduler * Market Management System User Interface o During this outage, please use https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action to directly access the Market Manager * Market Participant Identity Management (MPIM) * Components of the ERCOT Market Information System (MIS) including: o Report publishing to the MIS o Current Day Reports (CDRs) without retry functionality may not be rerun for the missed postings during the outage o MIS and ERCOT.com dashboards * Components of the External Web Services (EWS) may be intermittently unavailable * Net Dependable Capability and Reactive Capability Systems (NDCRC) Information on upcoming releases can be found on the ERCOT Multi Year Project Priority List (PPL) at http://www.ercot.com/services/projects/. CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com. dg