Hi Ulrich, It seems like you are encountering some challenges regarding the dynamic handling of cost elements in your allocation scheme in SAP. You are right that in principle the system has the ability to handle time-dependent configurations, however, the implementation may vary depending on the specific configuration and system settings ### Here are a few approaches that might help you: 1. Check the time dependency in the configuration: Check whether the configurations of your allocation schema are really set to be time-dependent. In SAP, you may be able to adjust this under the settings for the cost element or in Customizing for the allocation structure. 2 Use of validity dates: Make sure that the validity dates of the cost elements are maintained correctly. The validity can be defined in the master data of the cost elements. Here you should ensure that the validity periods are stored correctly and that the system takes them into account when retrieving the cost elements. 3 Adjustments in Customizing: It may be necessary to check the customizing settings for the allocation schemes. It may be necessary to make specific adjustments to ensure that the cost elements are handled correctly according to their type changes. 4 Check the selection variants: Since you are using dynamic cost element type related selection variants, it is important to check their configuration. Make sure that these variants are defined correctly and that the system interprets them as expected at runtime. 5 Use of experts: If internal resources are not sufficient, it might be helpful to consult an SAP consultant who specializes in CO-PA and allocation schemes. Such an expert can provide a more detailed analysis and may be able to recommend specific customizations that are applicable to your situation. 6 System updates/patches: Check to see if there are any recent patches or updates to your SAP system that address such issues or provide new features that allow for better handling of time-dependent data ### In summary: It is not "stupid" for the system to exhibit difficulties in the scenario you describe. It is often special pitfalls or missing adjustments in the system configuration that lead to such problems. By specifically checking and adjusting the settings in your SAP system, you should be able to find a solution for the correct handling of cost elements. Good luck in solving the problem!
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