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] <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/> . 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