Error KI 235 ACCOUNT REQUIRES AN ASSINGMENT TO CO OBJECT

Question

Dear Sir/Madam,
we had cenvat clearing account. With reference to purchase order, we want to clear them through f.13. when we run in test
run, we found that some items are not getting clear due to minor difference in debit and credit.
we had set tolerance limit for cenvat clearing account to clear minor difference in automatic posting through f.13.  we had set  excess prov/short prov gl code set in fbkp to post difference arising at the time of gl account clearing. we also set G/L code/cost center combination in okb9.
Now if we had maintained the gl code/cost center in okb9 on company code level, system post the difference properly in cost center. But if we maintain gl code/valuation area/cost center in okb9, system give error account requries an assignment to co object. system doesnot get cost center while posting. we had 7 valuation area and we want to define cost center on basis of valuation area in okb9 to post the difference in cenvat clearing.
Can you advice how to rectify the error? 
Regards
Rajesh

Answer 1

Hi,
   The account assignment for for automatically generated items such as the price difference will not pick up the assignment at a detailed level (eg. based on the valuation level or the business area). You must maintain OKB9 at the highest level for this account, on the first screen of OKB9.
Note 32654, explains why the system takes the account assignment at a higher level for automatically generated lines
like small differences.  You should maintain an entry in OKB9 at a higher level than valuation level (or profit center, or business area).
regards
Waman