Project simulations in SAP Project System (PS) are a powerful tool for "what-if" analysis and alternative project planning. They function as non-operative versions of a project, allowing planners to model different scenarios without impacting the actual, operative project. Key advantages include the ability to plan project structures (WBS), networks, and associated costs (C). Planners can create multiple simulation versions simultaneously to compare different approaches (E), such as a best-case versus a worst-case cost scenario. Furthermore, a simulation does not have to be based on an existing project; it can be created from scratch to model entirely new initiatives (B), providing maximum flexibility.

A. Project simulations allow posting of actual data

Simulations are strictly for planning purposes. The system explicitly prevents the posting of actual costs or revenues to a simulation version to keep it separate from operative accounting.

D. Project simulations can create purchase requisitions

Creating a purchase requisition is an operative logistical process that generates a commitment. This function is disabled in simulation versions as they are non-binding planning tools.

1. SAP S/4HANA Help Portal - Project Simulation:

"You use simulation versions to plan and execute projects for test purposes without affecting the operative project... You can create a simulation version without a template... You can create and manage several simulation versions for an operative project." This supports options B and E.

"In a simulation version, you can... Plan costs, dates, and resources." This supports option C.

"You cannot post actual data to simulation versions." This invalidates option A.

The documentation on simulation capabilities implicitly excludes the creation of operative documents like purchase requisitions, which are part of the execution phase, not the simulation/planning phase. This invalidates option D.

Source Document: SAP Help Portal, SAP S/4HANA, "Project Simulation".

2. SAP S/4HANA Help Portal - Creating Simulation Versions:

"You can create a simulation version in the following ways: Without a template... By copying an operative project... By copying a standard project." This directly confirms the validity of option B.

Source Document: SAP Help Portal, SAP S/4HANA, "Creating Simulation Versions".