A contract with a customer generally explicitly states the goods or services that
an entity promises to transfer to a customer. However, the performance
obligations identified in a contract with a customer may not be limited to the
goods or services that are explicitly stated in that contract. This is because a
contract with a customer may also include promises that are implied by an
entity’s customary business practices, published policies or specific statements
if, at the time of entering into the contract, those promises create a valid
expectation of the customer that the entity will transfer a good or service to the
customer.
25 Performance obligations