***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: March 15, 2017 NOTICE TYPE: R-A022217-04 Release-Retail SHORT DESCRIPTION: Reminder - Upgrade of the MarkeTrak Application and Retail Processing Outage INTENDED AUDIENCE: Retail Electric Providers (REPs) and Transmission and Distribution Service Providers (TDSPs) DAY AFFECTED: March 25, 2017 7:00 PM to March 27, 2017 12:00 AM LONG DESCRIPTION: ERCOT will be upgrading the version of the MarkeTrak Application in the Production environment March 25, 2017 7:00 PM to March 27, 2017 12:00 AM. No significant functionality changes are anticipated. The URL for production MarkeTrak will be standardized to: https://mis.ercot.com/marketrak/tmtrack/tmtrack.dll? Please ensure that any browser bookmarks used to access production MarkeTrak match this URL. ADDITIONAL INFORMATION: The following ERCOT systems will be impacted during the implementation period. * Market Participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT during the outage. This includes all retail transactions. * 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 Application components of the Market Information System (MIS) and the Retail API will be unavailable. * Retail Reports and Extracts may be impacted during the outage timeframe. * eService application will be unavailable on the MIS. * Find ESIID and Find Transaction will be unavailable. Information on upcoming releases can be found on the 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