When I run cost estimate CK11, I encountered an error message 'cost element ... is not assigned to a cost component structure'
I have assigned the cost element of material consumption account in the cost component structure (OKTZ), this account is defined in OBYC - GBB VBR as the inventory offsetting account.
However, when I display the cost component split in the process order, I'm able to see the breakdown of the material costs.
Any idea what could have caused the error message above in CK11.
In the error it will also give the cost element which is not assigned, if you double click the error. I think you only need check the assignments in OKTZ for the cost element shown in the error. It need not be a material account it may be some other account like subcontracting expenses etc. Check for the acccounts through the BOM.