NOTICE DATE:  June 29, 2015

NOTICE TYPE:  M-A062915-01 Outage

SHORT DESCRIPTION:  Market Data Transparency Web Services Issue

INTENDED AUDIENCE:  CRs and TDSPs

DAY AFFECTED:  June 29, 2015

LONG DESCRIPTION:  ERCOT is experiencing issues with the following portions of Market Data Transparency (MDT) Web Services, which are accessed via Market Information System (MIS):

· Provide ESIIDs where AMS interval data not loaded for a trade date

· Provide AMS interval data for a trade date

ERCOT is investigating the root cause, and will send a follow-up notice when the issue is resolved.

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].

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