NOTICE DATE:  November 22, 2011
NOTICE TYPE:  M-A112211-01 INITIAL:  Maintenance Outage  Retail/Wholesale
SHORT DESCRIPTION:  Scheduled Maintenance Outage
INTENDED AUDIENCE:  All Market Participants
DAY AFFECTED:  Sunday, December 4, 2011 from 06:00 through 21:00
LONG DESCRIPTION:  ERCOT has scheduled a maintenance outage for Sunday, December 4, 2011 from 06:00 through 21:00.
ADDITIONAL INFORMATION:  During the 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 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.
  *   Components of the TML and Commercial API will NOT be available including:
     *   Find ESI ID
     *   Find Transaction
     *   Submit Transactions
     *   USA Functionalities
     *   Report Explorer, including
        *   Reports
        *   Extracts
        *   Invoices
        *   Settlement Statements
     *   Extract Scheduler
     *   Web Services Data Requests

  *   ERCOT Internet Services will NOT be available, including but not limited to:
     *   ERCOT.com  www.ercot.com<http://www.ercot.com>
     *   MarkeTrak - https://marketrak.ercot.com:8443/tmtrack.dll
     *   TCR - https://tcr.ercot.com<https://tcr.ercot.com/>
     *   Texas Renewables  www.texasrenewables.com<http://www.texasrenewables.com/>
  *   Components of the MIS will NOT be available including:
     *   Retail Applications


  *   Components of the MIS will intermittently NOT be available including:
     *   Downloading of extracts and reports


  *   Components of the External Web Services (EWS) will intermittently NOT be available including:
     *   GetReport

MOS, Scheduling API, MOSTML, MOSPUBLIC, and Outage Scheduler will not be affected as there will be a DNS failover from Taylor to Austin.
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/>.

DH/JA
277474



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