OKB9 Cost Center at Header level
In one of my sub contracting scenario I have assigned cost element in okb9 for multiple business area with the combination of valuation area, no profit centre is assigned. At the time of posting system is asking for co object assignment for the cost element of sub contracting which is assigned in okb9.
When I am assigning a dummy cost centre at header level of okb9, it works fine.
Please tell me the use of header cost centre in case of multiple cost centre assignment in okb9.