We use the Transaction Code KG12 to calculate the Overhead. this is a monthly exercise and there is a tendency to skip this process by the users. as a result the huge order balances recorded (including the Overhead Value). Finally it will have a impact to the PL as Production Variance.
in summary the major portion of you production variance is due non calculation of Overhead and we want to improve this process. Isn't there any system control to make the Overhead Calculation Mandatory?