NOTICE DATE: October 25, 2017

NOTICE TYPE: R-A102517-01 General

SHORT DESCRIPTION: ESIIDUSAGE table addtime discrepancy

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: September 23, 2017 to current

LONG DESCRIPTION: On September 22, 2017 changes to ERCOT’s Settlement System were implemented which inadvertently affected the population of the addtime field of the ESIIDUSAGE table. Any records added to this table from September 22, 2017 and after have an addtime of 9/22/2017.

ERCOT is currently working to correct the issue going forward and will also be addressing corrections to affected records. The corrections will result in a higher than normal amount of updates to the ESIIDUSAGE table via the ESIID Service History and Usage extract (ZP12-245) and the following Web Services:

· Provide Non-IDR transaction data for ESIIDs I own (COMS-449)

· Provide all extract records for ESIID Service History and Usage (COMS-438)

More information regarding the correction schedule will be communicated by Market Notice as soon as possible.

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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