In the product creation process, production planning is perhaps the most important process, second only to product development. However, software-based support for production planning at companies currently takes place against the background of established structures and the fulfillment of location-specific requirements using what is frequently a number of different digital tools. This gives rise to an extremely heterogeneous environment as far as planning tools are concerned. This heterogeneity is also reflected in the planning processes themselves and hinders end-to-end planning. In particular, it makes cross-location planning, the comparison of planning results and the exchange between different planning disciplines and planning departments very difficult. This are the results of a study with Hot spots and recommendations for digital manufacturing.