NOTICE DATE: December 13, 2013 NOTICE TYPE: M-A121313-01 Outage - Wholesale SHORT DESCRIPTION: Scheduled Maintenance Outage INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: December 16, 2013 from 16:00 - 17:00 LONG DESCRIPTION: ERCOT will be performing maintenance on December 16, 2013 from 16:00 - 17:00. The following systems may experience intermittent service interruptions during the maintenance period: * 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 and search functionality * Components of the External Web Services (EWS) Information on upcoming releases can be found on the ERCOT Multi Year Project Priority List (PPL)<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. sa