The State agency responsible for retaining any document or information may prescribe additional details with respect to the requirement in retaining such document or information insofar as they are not contrary to the provisions of this Section. Section 13 An offer or acceptance in entering into a contract may be expressed by means of a data message. A contract shall not be denied legal effect solely on the grounds that such offer or acceptance is made in the form of a data message. Section 14 As between the originator and the addressee of a data message, a declaration of will or notice may be made in the form of a data message. Section 15 Whoever sends a data message by whatever means, it shall be deemed that the data message belongs to such person. As between the originator and the addressee, a data message is deemed to be that of the originator if it is sent by: (1) a person who is authorized to act on behalf of the originator in respect of that data message; or (2) an information system programmed to operate automatically in advance, by the originator or a person authorized to act on behalf of the originator. Section 16 The addressee is entitled to regard a data message as being that of the originator and shall also be entitled to act pursuant to such data message if: (1) the addressee has properly applied a procedure previously agreed with the originator to verify whether the data message was that of the originator; or (2) the data message received by the addressee results from an act of a person who uses a method which is used by the originator to identify data message as his own and to which that person has gained access through the relationship with the originator or person who is authorized to act on behalf of the originator. The provisions of paragraph one shall not apply if: (1) as of the time when the addressee has received notice from the originator that the data message is not that of the originator and, at the same time, the addressee had a reasonable time to verify the facts to which the notice relates; or (2) in a case pursuant to paragraph one (1), at any time when the addressee knew or should have known, had the addressee exercised reasonable care or used any agreed procedure, that the data message was not that of the originator. Section 17 In the case of Section 15 or Section 16 paragraph one, as between the originator and the addressee, the addressee is entitled to regard the data message as received as being what the originator intended to send and to act on that assumption on the data message unless the addressee knew or should have known, had the addressee exercised reasonable care or used any agreed procedure, that the transmission resulted in any error in the data message as received. Section 18 The addressee is entitled to regard each data message received as a separate data message and to act on that assumption with respect to each data message except to the extent that it duplicates another data message and the addressee knew or should have www.ThaiLaws.com 4