Every six years, States Parties submit periodic reports for examination by the World Heritage Committee. During the six-year Periodic Reporting cycle, States Parties report region by region in the following order: Arab States, Africa, Asia and the Pacific, Latin America and the Caribbean, Europe and North America The sixth year of each cycle is a period for reflection and evaluation. This pause allows the Periodic Reporting mechanism to be assessed and revised as appropriate before a new cycle is initiated. The World Heritage Committee may also decide to use the reflection to initiate the development and publication of a Global World Heritage Report.
The questionnaire for the Third Cycle of Periodic Reporting (2018-2024) was revised within the framework of the Reflection on Periodic Reporting (2015-2017) and incorporates an extensive number of changes and improvements. As well as countless minor improvements, the major developments include full integration of the Sustainable Development approach, an emphasis on synergies with other conventions and programmes relevant to World Heritage and the creation of a monitoring indicator framework for the implementation of the World Heritage Convention. This new format was adopted by the World Heritage Committee at its 41st session in Krakow, Poland (2017).