NOTICE DATE: July 31, 2009 NOTICE TYPE: R-C073109-01 Informational - MarkeTrak User Guide SHORT DESCRIPTION: Changes to the MarkeTrak User Guide INTENDED AUDIENCE: CRs and TDSPs DAY AFFECTED: August 17, 2009 LONG DESCRIPTION: Changes have been made to the following sections of the MarkeTrak User Guide: · Section1_General · Section2_IAG · Section3_Cancel An additional section has been created for Section2_IAG per the PUCT Substantive Rule §25.474 regarding expedited switches. This section is in a separate document named "Proposed User Guide Section 2.1.4- Rescission-based Issues" and will be added to Section2_IAG after approval. The updated versions can be found on the MarkeTrak Information page at the following link: http://www.ercot.com/services/client_svcs/mktrk_info/ ERCOT intends to replace the User Guide sections with the updated versions on Monday, August 17, 2009. ACTION REQUIRED: Market Participants are requested to send any suggested edits to their assigned Retail Account Manager by Thursday, August 13, 2009. 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<http://lists.ercot.com/>. VS/DH