Viking Gas Transmission Company

First Revised Volume No. 1

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Effective Date: 07/01/2004, Docket: RP04-306-000, Status: Effective

Fourth Revised Sheet No. 146 Fourth Revised Sheet No. 146 : Effective

Superseding: Third Revised Sheet No. 146

ELECTRONIC DATA INTERCHANGE

TRADING PARTNER AGREEMENT

Article 2. Transmissions (Continued)

2.3 Functional Acknowledgement and Response Document

2.3.1 For the purposes of this Agreement, a "Functional Acknowledgment" means an

ASC X12 Transaction Set 997 which confirms a Document has been received and whether all

required portions of the Document are syntactically correct or not, but which does not

confirm the substantive content(s) of the related Document.

2.3.2 If the Functional Acknowledgment indicates an error, neither party shall rely

on the Document. The sending party shall attempt to correct the error and promptly

retransmit the Document or otherwise contact the receiving party. If the Functional

Acknowledgment does not indicate any error, the Functional Acknowledgment shall constitute

conclusive evidence a Document has been received in syntactically correct form.

2.3.3 If there has been proper receipt pursuant to Article 2.1, verification and

successful decryption pursuant to Article 2.2, and if the receiving party nevertheless

fails to transmit a Functional Acknowledgement, the sending party's records of the contents

of the Document shall control, unless the sending party has retransmitted a Document

pursuant to Article 2.3.7.

2.3.4 By mutual agreement, the parties may designate in the Exhibit(s) a "Response

Document" Transaction Set as a substitute for or in addition to an ASC X12 Transaction Set

997. A Response Document confirms that a Document has been received, and whether all

required portions of the Document are syntactically correct, and contains data sent by the

receiving party to the sending party in response to the substantive content of the related

Document.

2.3.5 If the Response Document indicates an error, neither party shall rely on the

Document or portion of the Document which is in error, if known. The sending party shall

attempt to correct the errors and promptly retransmit the Document or applicable portion or

otherwise contact the receiving party. If the Response Document does not indicate any

error, the Response Document shall constitute conclusive evidence a Document has been

received in syntactically correct form.

2.3.6 If the parties have mutually agreed to the use of a Response Document, and if

there has been proper receipt pursuant to Article 2.1, verification and successful

decryption pursuant to Article 2.2, and if the receiving party nevertheless fails to

transmit a Response Document, the sending party's records of the contents of the Document

shall control unless the sending party has retransmitted a Document pursuant to

Article 2.3.7.

2.3.7 Retransmissions. If the sending party of a Document has not received a

corresponding functional acknowledgment or response document within the time frame

indicated in the Exhibit(s), the sending party shall retransmit the Document and such

Document shall be considered a new transmission for purposes of Article 2.

Article 3. Terms

3.1 Transaction Terms and Conditions. This Agreement is intended to facilitate Data

Communications between the parties concerning the transactions related to transportation or

sales conducted pursuant to underlying written agreements. In the event of conflict

between this Agreement and the subject underlying written agreement(s), the terms and

conditions of the underlying agreement(s) shall control.