Carrying out an Automatic Simulation 
An automatic simulation takes place in the background. It corresponds to the procedure for a simulation with manual entry. The system only takes the following CAPP elements into account:
Processes that are marked with the standard indicator in the work center. If there is no standard indicator next to any of the processes in the work center, then you must explicitly enter a process on the initial screen for simulations.
Methods that are marked in a process with the standard indicator. If there is no standard indicator set against any of the methods, then you must explicitly enter a method on the initial screen for simulations.