Behavioural Competencies are an important component of their skills and capabilities alongside technical and contextual competencies.
Project Manager competence is an area where the individual and the organisation both need to accept responsibilities. Helping project managers build the skills they need to do a great job is as important as the individual taking responsibility for developing their skills and behaviours in a supported environment. Both will result in strong project management practices and project successes.
Soft skills for Project Managers is a topic that is regularly raised without any real resolution of where the balance between technical (hard) skills and people (soft) skills lies. The question is too simplistic, soft skills encompasses a wide range of skills and anyone responsible for delivery will need a mix of hard and soft skills to get the job done.