NOTICE DATE: April 19, 2013 NOTICE TYPE: M-B032113-03 Release - Retail SHORT DESCRIPTION: REMINDER - On-cycle Retail Release on 17:00 Saturday, April 20, 2013 through 00:00 Monday, April 22, 2013 INTENDED AUDIENCE: All Market Participants DAYS AFFECTED: 17:00 Saturday, April 20, 2013 through 00:00 Monday, April 22, 2013 LONG DESCRIPTION: ERCOT has an on-cycle Retail Release planned for 17:00 Saturday, April 20, 2013 through 00:00 Monday, April 22, 2013 ERCOT will implement an upgrade to Retail databases. ADDITIONAL INFORMATION: During this outage, the following functions will be affected: * Market participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT. * 867 Transactions will NOT be forwarded during the outage. * 997 Functional Acknowledgements will NOT be sent during the outage. * MarkeTrak will be unavailable for the duration of the outage. * Retail components of the MIS and the Retail API will not be available. * MPIM will not be available. * eService application will be unavailable on the Market Information System (MIS). 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 e-mail at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving e-mail 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<http://lists.ercot.com/>. ka