Variable consideration that is promised in a contract may be attributable to the
entire contract or to a specific part of the contract, such as either of the
following:
(a) one or more, but not all, performance obligations in the contract (for
example, a bonus may be contingent on an entity transferring a
promised good or service within a specified period of time); or
(b) one or more, but not all, distinct goods or services promised in a series of
distinct goods or services that forms part of a single performance
obligation in accordance with paragraph 22(b) (for example, the
consideration promised for the second year of a two-year cleaning service
contract will increase on the basis of movements in a specified inflation
index).