To make the allocation even more precise, it could be beneficial to separate costs on distinct G/L accounts according to the type of costs initially posted on the sending object. This provides a more detailed level of analysis for the responsible managers. Using allocation structures helps you do just that.
Definition
An allocation structure is a structure where you have mapped primary and secondary cost elements to a secondary cost elements. It allows you to post to multiple overhead allocation accounts in a single segment.
Note
An allocation structure can be used for cost centers as well as WBS elements (and where available, internal orders).