Why does CTM take longer than usually to complete the planning run ?
You can experience a very long run time when a large number of orders are split. The consequence is a bottleneck situation when writing the results to the LC. This order splitting occurs usually in time continuous planning and it depends on the constraints used for the CTM planning. When one of the constraints leads to a complete fail CTM tries to fulfill the demand using the smallest possible quantity. So the main rule is that CTM tries to fulfill demands on time using all existing alternatives. Thus if several alternative resources exist CTM uses in the worst case all of them just to fulfill the demand on time. Therefore orders with varying quantities could appear. These orders can be so small that they cannot be used for an efficient production. It is highly recommended to use the maximum scheduling time to end the scheduling of those demands which result in this splitting.
