"Transaction" means an event by which—
(a) a controlled drug, restricted drug or a poison comes into or goes out of a person’s possession; or
(b) the composition, form or strength of, or way of packing, a controlled or restricted drug or a poison is changed.
Examples of transactions—• obtaining and keeping samples of chemical starting materials used in manufacturing a controlled or restricted drug or a poison• obtaining and keeping samples of finished products of a manufactured controlled or restricted drug or a poison• manufacturing, packing and repacking a controlled or restricted drug or a poison• moving a controlled or restricted drug or a poison from one place to another (with or without a change of ownership)