NOTICE DATE:  December 23, 2008    

NOTICE TYPE:  R-A122308-01 - Outage - Retail MarkeTrak API

SHORT DESCRIPTION:  ERCOT will be taking a MarkeTrak - API outage
outside the Service Level Agreement timeframe, December 29, 2008, from
7:00 PM through 7:30 PM.  

INTENDED AUDIENCE:  CRs and TDSPs

DAY AFFECTED:  December 29, 2008, from 7:00 PM through 7:30 PM.    

LONG DESCRIPTION:  ERCOT will be taking a MarkeTrak - API outage outside
the Service Level Agreement timeframe, December 29, 2008, from 7:00 PM
through 7:30 PM to update to the latest MarkeTrak XSD and WSDL files.  

ERCOT identified a discrepancy pertaining to the execution of a single
transition (Unexecutable) when accessed via the API for Inadvertent
Gaining and Inadvertent Losing issues.  The mismatched value was updated
in the latest release of the attached XSD and WSDL files.  The MarkeTrak
issues affected by this discrepancy have all been resolved. 

ACTION REQUIRED:  Market participants utilizing the MarkeTrak API are
asked to import these files during the window indicated above to avoid
receiving errors. The updated MarkeTrak XSD and WSDL files are located
on ERCOT.com under the MarkeTrak Information Page.

http://www.ercot.com/services/client_svcs/mktrk_info/  

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 
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DH/JR/DP/JA