System generated purchase order - contract ??

Hi,

Please advise whether system generated purchase order which goes through SAP to the supplier and acknowledged by supplier becomes a contract?

I am asking this because Information Technology Act says that digital signatures should be affixed to authenticate an electronic record [Section 3(1)].    Further, Section 85A of the Indian Evidence Act says that "the court shall presume that every electronic record purporting to be an agreement containing the digital signatures of the parties was so concluded by affixing the digital signatures of the parties."

Please advise.

regards