For the real time FI/CO integration we have maintained different gl accounts reflecting different business activity - Settlement of orders / activity allocation. Functional area is maintained in the gl master of these accounts.
During settlement of WBS or Settlement of orders correct functional area is determined from these gl accounts. However whenever, a FI entry is generated for confirmation of activity on a WBS element with
Cr Cost Center,
functional area derivation is not happening on the debit leg. This is despite functional area being maintained in the gl account.