Making offer and its receipt 5. Unless the parties otherwise agreed, the offer shall be deemed : (a) made through data message when sent or entered in an information a system not controlled by initiator or whoever may deputize therefore ; (b) received by the receiver on entry of data message in an information system the use of whichis previously agreed to by the parties, or entered an information system belonging to the receiver. Making a acceptance and its receipt 6. Unless the parties otherwise agreed, acceptance shall be deemed : (a) made through data message at the time of entry in an information system not controlled by the initiator or whoever he may deputize therefore; (b) received by the receiver on entry of data message in an information system the use of which is previously agreed to by the parties, or entered an information system belonging to the receiver . Chapter III Non-contractual transactions Unilateral will 7. The data message which contains unilateral will as detailed in the Civil Transactions Act shall have the legal cogency of the formal document whenever issued by an approved digital signature.