***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: March 1, 2019 NOTICE TYPE: M-A030119-01 Release SHORT DESCRIPTION: Planned Maintenance on the Market Operations Test Environment (MOTE) and Retail Market Test Environment (RMTE) INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: Wednesday, March 06, 2019; Wednesday, March 20, 2019 LONG DESCRIPTION: On Wednesday, March 06, 2019 ERCOT will be performing maintenance on the Market Operations Test Environment (MOTE) and Retail Market Test Environment (RMTE) infrastructure that supports the following MOTE/RMTE User Interface at the URL below: * (UI) https://testmis.ercot.com No outage or interruption of service is anticipated, and there will be no changes to any MOTE/RMTE applications. Should you experience an issue with this test URL, please contact the ERCOT HelpDesk. Additionally, on Wednesday, March 20, 2019, ERCOT will be disabling the following legacy URLs in MOTE/RMTE: * (UI) https://testing.ercot.com * (API) https://testingapi.ercot.com * (WAN API) https://testingapi.wan.ercot.com As stated in previous Market Notices<http://www.ercot.com/services/comm/mkt_notices/archives/search?nc=releases&per=&pg=&q=mote%2Frmte&sort>, the MOTE/RMTE URLs that Market Participants should be utilizing for testing are: * (UI) https://testmis.ercot.com * (API) https://testmisapi.ercot.com * (WAN API) https://testmisapi.wan.ercot.com 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. mm