NOTICE DATE:  March 20, 2009

NOTICE TYPE: M-A032009-01 – Informational – Internal clean-up of ZIP codes within the Customer Registration Database.

SHORT DESCRIPTION:  ERCOT will perform an internal clean-up of ZIP codes within the Customer Registration Database.

INTENDED AUDIENCE:  All Market Participants        

DAY AFFECTED:  March 30, 2009

LONG DESCRIPTION:  On Monday, March 30, 2009, ERCOT will be performing an internal clean-up to remove punctuation (i.e. spaces, dashes, etc.) from ZIP codes within the Customer Registration Database. 

These changes will be reflected immediately in the Texas Market Link (TML) Find ESIID application and on the Full TDSP ESI ID Extract which will post on Tuesday, April 7, 2009.

ADDITIONAL INFORMATION:  Per Texas SET guidelines, punctuation must be excluded from the postal code field (N403).  The ZIP codes that contain hyphens were set up this way at market open.  Any 814_20 Create received by ERCOT that does not meet the Texas SET guidelines will be rejected.  This effort is being performed to prevent any Mass Transition 814_03s from failing Texas SET validation on an ESI ID in which the ZIP code contains punctuation.

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].