For a particular Material standard cost are different in MM03 and CK13n. When we go in to standard costs from MM03 the costs is that of previous month. How that is poosibleAnd it created a huge OSR .Control report for detecting unusual OSR variances from monthly product costing updates failed. OSR posted in the G/L from April 1st product costing run was materially different from the control report for product costing and OSR. Any help is appreciated.