| # Altering Operation Relationships by Order If the new operation order is valid, the new structure can be saved. LN displays whether the new plan is valid (that is, possible) at the bottom of the window. The plan can be invalid for the following reasons: More than one last operation is defined. A loop is detected in the structure. You can select Undo from the Edit menu to restore the original structure. Note If you want to make more extensive changes, use the Production Planning (tisfc0110m000) session. Related topics Production orders - functional overview Planning production orders in SFC |