“…This means that a high level of trust between parties in a supply chain engagement is not necessary for a collaborative planning and decision-making process, like a sales and operations planning (SOP), as this could be a process or a system initiated by management and needs to be followed by the various planning stakeholders. Second, other perspectives of trust, such as transactional trust (dependence, formalization, and control) (Mamad and Chahdi, 2013), contractual and competence trust (Jones et al, 2010), and institutional trust (the regional context where the buyer and sellers are located) (Vieira et al, 2013;Nguyen and Liem, 2013), could be associated with collaborative planning and decision making. Doney and Cannon (1997) and Gullet et al (2010) noted that the real test of the presence of trust in a company is the sharing of private and even proprietary information between the supply chain parties.…”