Follow the below steps to reverse the Production Order,

1. First check your Production order is settled. If its reverse the settlement using KO88 t-code

2. Reverse the variance if  it is there- KKS2.

3. Reverse the GR - MIGO cancel document - it will reverse the stock from Inventory 102 Movement Type.

4. Reverse the Labor confirmation for all the operations using CO13.

5. Reverse the components MIGO 262 movement.

6. And then try to cancel / delete the production order.

Note

If the Production Order is TECO you need to revoke it.

Cancel --- Reverse the production order :