“…Marcelino-Sádaba et al [2] further assert that more progress has been made in the environmental focus of relevant research, than the social aspect, which would be the domain for PM. Generally, extant literature, for the most part, is focused on issues such as analysing key aspects of sustainability projects [6]; introduction of management systems [13]; PM commitment to sustainability [14]; sustainability assessment [7]; Project sustainability performance [15]; technology, Materials, risk, and cost [7]; Design [7,16,17]; Critical success factors [18]; stakeholders, organisational goals [19]; and innovation diffusion [18,20]. Most existing studies do not present a concise picture of the nature and occurrence of challenges, for better classifications and articulation of the dynamics, with regards to PM practice, and from the experiences and perceptions of PMs.…”