NOTICE DATE: October 31, 2008 NOTICE TYPE: R-A103008-03 UPDATE: Retail Processing SHORT DESCRIPTION: ERCOT experienced an internal system processing issue Thursday, October 30, 2008, from 3:18 PM through 9:31 PM. As a result, duplicated transactions or possibly bad/invalid data was forwarded to several Market Participants. INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: Thursday, October 30, 2008 from 3:18 PM through 9:31 PM LONG DESCRIPTION: ERCOT experienced an internal system processing issue on October 30, 2008, from 3:18 PM through 9:31 PM. As a result, duplicated transactions or possibly bad/invalid data was forwarded to Market Participants. Some of these transactions may have contained a "TS Code" relating to a Mass Transition. There is currently no Mass Transition taking place. After further analysis, ERCOT has determined that there were 1,033,762 transactions in 71,270 files that were sent out in error. ERCOT has provided a spreadsheet to summarize the potential market impact. We hope this will aid Market Participants with their clean-up efforts. ERCOT continues to perform the analysis to determine which transactions were duplicated or invalid. Duplicates for the purposes of this analysis are transactions that have the same ESIID, Original transaction number, and Tran type as a transaction previously sent. The transaction ID may or may not match the original transaction received. Invalid transactions are those that either does not match a service order previously submitted, or match a transaction previously submitted but the outbound response does not match what occurred originally. The analysis is being worked based on the scenarios most likely to create out-of-synch situations between ERCOT and the Market Participants. As the analysis is completed, ERCOT will begin logging MarkeTrak issues. ERCOT will provide additional information as it becomes available. The breakdown by transaction type is as follows: Transaction Type Count 814_02 6548 814_03 206856 814_05 113088 814_06 72460 814_08 67188 814_09 2633 814_11 7 814_12 324 814_13 1326 814_14 4 814_17 9829 814_18 7287 814_19 27183 814_20 22124 814_21 23862 814_22 4686 814_24 1628 814_25 14978 814_26 3 814_27 683 814_28 2128 814_29 24 824_02 2482 867FWD 437264 997 9167 Total 1033762 ADDITIONAL INFORMATION: The attached spreadsheet details the potential transaction impact of the different transactions involved. ERCOT will provide additional information as it becomes available. 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 <https://mail1.ercot.com/exchweb/bin/redir.asp?URL=http://lists.ercot.co m/> . JR/DH/DP ________________________________ From: ERCOT Client Relations Sent: Friday, October 31, 2008 10:18 AM To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask] Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps Subject: R-A103008-02 UPDATE: Retail Processing NOTICE DATE: October 31, 2008 NOTICE TYPE: R-A103008-02 UPDATE: Retail Processing SHORT DESCRIPTION: ERCOT experienced an internal system processing issue Thursday, October 30, 2008, from 3:18 PM through 9:31 PM. As a result, duplicated transactions or possibly bad/invalid data was forwarded to several Market Participants. Some of these transactions may have erroneously contained a "TS Code" relating to a Mass Transition. INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: Thursday, October 30, 2008 from 3:18 PM through 9:31 PM LONG DESCRIPTION: ERCOT experienced an internal system processing issue on October 30, 2008, from 3:18 PM through 9:31 PM. As a result, duplicated transactions or possibly bad/invalid data was forwarded to Market Participants. ERCOT is currently working to identify the erroneous transactions. MarkeTrak issues will be submitted to those MPs impacted with the total volume counts and filenames of the invalid data. ERCOT will follow up on these issues with transaction level detail of potential out of sync conditions as soon as it is available to coordinate a resolution. Additional information about this issue will be provided as it becomes available. ADDITIONAL INFORMATION: Some of these transactions may have contained a "TS Code" relating to a Mass Transition. There is currently no Mass Transaction taking place. 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] <BLOCKED::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. DP/JR ________________________________ From: ERCOT Client Relations Sent: Thursday, October 30, 2008 11:13 PM To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask] Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps Subject: R-A103008-01 Retail Processing NOTICE DATE: October 30, 2008 NOTICE TYPE: R-A103008-01 Retail Processing SHORT DESCRIPTION: Today, October 30, 2008, from 3:18 PM through 9:31 PM, ERCOT experienced an internal system processing issue which sent duplicated transactions or possibly bad/invalid data to Market Participants. INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: Thursday, October 30, 2008 from 3:18 PM through 9:31 PM LONG DESCRIPTION: Today, October 30, 2008, from 3:18 PM through 9:31 PM, ERCOT experienced an internal system processing issue which sent duplicated transactions or possibly bad/invalid data to Market Participants. ERCOT is currently working to identify the erroneous transactions and corresponding Market Participants. Additional information about this issue will be provided as it becomes available. ADDITIONAL INFORMATION: Affected Market Participants will be provided lists when they become available. 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] 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 <https://mail1.ercot.com/exchweb/bin/redir.asp?URL=http://lists.ercot.co m/> . DP