***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: May 31, 2019 NOTICE TYPE: M-A050219-03 Release-Retail SHORT DESCRIPTION: Reminder - Retail Release June 2019 INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: June 2, 2019 6:00 AM to 6:00 PM LONG DESCRIPTION: ERCOT will be implementing some system changes in the production environment on June 2, 2019 6:00 AM to 6:00 PM. ADDITIONAL INFORMATION: ERCOT systems may experience intermittent service interruptions during the implementation period. The systems include, but are not limited to: * 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 Please review the ERCOT website for previous Market Notices<http://www.ercot.com/services/comm/mkt_notices/archives/search?nc=all&per=&pg=&q=M-A050219&sort=> related to this subject. 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 a public 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