In the Cost management/Inventory management, as posting setup used for the purchase process the posting types
(I) Purchase expenditure, un-invoiced (physical) and
(II) Purchase expenditure for product (financial)
However, the account is used as an offset account for both inventory accrued/final posting and payables accrued/final posting. Hence, it ends up to zero in the standard case (if applied values are equal).
In fact we should have 2 different P&L entries for
(a) the inventory offset: P&L "Change in inventory" and
(b) the payables offset: P&L "Material expense"
In order to cover this, we may define an additional charge posting. However, this was only possible for the physical posting entry and does not cover the requirement.
It was better to split up the posting type into two and allow different setting for firstly inventory offset and secondly liability offset such that we get 2 separated postings without thisoutcancelling posting entries.