Most enterprises implement plant maintenance in a series of stages rather than in a single step (i.e., implementing the full range of functions in all plants all at once). Therefore, during project planning, you need to make a fundamental decision about the stages in which you’ll implement plant maintenance, whether using SAP PM or another solution. There are two aspects of the implementation to consider: The functional stages of your plant maintenance project can be as follows: The spatial stages, for their part, can be as follows: This is the basis on which you can create a plan that specifies which functions are to be implemented in which operation or plant at which point in time. Once you have implemented these stages, you need to make a fundamental decision about which of the following strategies you deem the most useful for your project: This figure shows a summary of the functional and spatial stages. Editor’s note: This post has been adapted from a section of the book Configuring Plant Maintenance in SAP S/4HANA by Karl Liebstückel.