Which method can be used for date planning within the Project Systems environment?

The use of Transaction CJ21 is fundamental in the Project Systems (PS) environment for date planning. This transaction allows users to create and maintain project definitions, which include detailed planning data such as project start and finish dates, milestones, and scheduling information. It enables project managers to establish a timeline for project execution, which is crucial for resource allocation, budget management, and overall project governance. With Transaction CJ21, users can navigate through various aspects of project planning while ensuring that the timelines align with organizational goals and resource availability.

In contrast, the other options do not serve as direct methods for date planning in the same context. Easy Cost Planning (ECP) focuses primarily on cost estimation rather than scheduling. BPM and Standard Operating Procedures play roles in streamlining processes and providing guidelines but do not directly facilitate the functional task of date planning within the Project Systems framework.