Enter the transaction Z1K_MLSTATUS.

In the field Valuation Area, add the plants considered in the costing run.

Check on CKMLCP the plants used for a specific costing run and copy them into Z1K_MLSTATUS.

 In the report result, status 70 is "Closing entry performed", so it's OK.

In the bottom of the screen you will find the description of each status.

If code 60 appears it means ML was reversed but missing the relaunch.