During Sales order delivery system issuing error as "Account 43501100 requires an assignment to a CO object" but already there is assignment of cost center to this G/L account in OKB9, this G.L is related to packing material . This error we are getting after EHP6 during user testing for production copy client.
But same scenario is tested in quality which is working fine. Also in production client also there is no error. Already cross check feild status groups also
Kindly suggest what is the reason