This supplementary guidance provides an overview of the guidelines for adaptation communications (adcoms) and related arrangements, and suggestions for applying the guidelines and for benefiting from the links between adcoms and other adaptation-related reporting arrangements under the Convention and the Paris Agreement. It should help Parties that are preparing adcoms and the information referred to in the annex to decision 9/CMA.1 to enhance the quality of reported information, reduce duplication in it and in the work required to prepare that information, and benefit from synergies with other planning, implementation and reporting arrangements for adaptation by guiding them towards the latest relevant resources.