Represents IUCN's advice to States Parties which are considering nominating a natural or mixed property for World Heritage status. Preparing a World Heritage nomination is not a simple task and interested parties are encouraged to carefully analyse the situation, taking the time needed to ensure a sound process that is closely linked to ensuring effective management of the property and cooperation with communities and stakeholders. IUCN strongly recommends this Manual be read - alongside the Operational Guidelines of the World Heritage Convention - before deciding whether or not to nominate a property and then to follow this guidance and the Operational Guidelines carefully, while also seeking broad input to the process, if it is decided to proceed with the World Heritage nomination.