Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

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Effective Date: 12/01/2002, Docket: RP03- 51-000, Status: Effective

First Revised Sheet No. 336 First Revised Sheet No. 336 : Effective

Superseding: Original Sheet No. 336

EDI EXHIBIT

Transaction Set Worksheet

Transaction Set Information:

---------------------------

Transaction Description:

Transaction Set ID:

Transaction Version:

Estimated Transactions per Month:

Company Name Company Name

------------ CenterPoint Energy - Mississippi

River Transmission Corporation

ISA QUALIFIER (ISA05/07)

ISA ID 9ISA/06/08)

GS APPLICATION ID (GS02/03)

Transaction Set Contact Information:

-----------------------------------

Company Name Company Name

------------ CenterPoint Energy - Mississippi

River Transmission Corporation

Business Representative:

Telephone:

Fax:

E-Mail:

EDI System Contact

Telephone:

Fax:

E-Mail:

Reference is made to the Electronic Data Interchange Trading Partner Agreement

between the undersigned pursuant to which this EDI Exhibit is executed.

Company CenterPoint Energy - Mississippi

River Transmission Corporation

_____________________ ______________________________

Name/Title/Date Name/Title/Date

_____________________ ______________________________