Commentary Ch. II Paragraph 24

The Guidelines recognise that there are practical limitations on the degree of leverage enterprises have or may be able to build to effect change in the behaviour of entities with which they have business relationships. These are related to product and/or service characteristics, the number of suppliers and other business relationships, the structure and complexity of the supply chain, or the nature of a business relationship or adverse impact in question. For example, in some situations once a service is rendered or a product is sold or re-sold, enterprises may have diminished ability to monitor their impacts or exert or build leverage. In such situations making efforts to identify actual
and potential impacts and take preventive or mitigating actions may be particularly important prior to and at the point of sale.