42.Section 19 sets out the requirements for preparing LDDs. The local planning authority must prepare each LDD in accordance with their local development scheme. The authority must have regard to the matters listed in the section, including national policies, the RSS for their region and their community strategy, and must carry out a sustainability appraisal of the proposals in each document. Once the authority have adopted their statement of community involvement they must comply with it in preparing any local development document.