Hello,
In MTO scenario you can see the sales order linked to the production order, as I had explained earlier.
If you scenario is MTS, then you cannot establish a link between sales order and production order.
Please see below screenshots,
CO03: Assignment Tab:
Image may be NSFW.
Clik here to view.
COOIS: Change Layout -> Here you can add columns for sales order and sales order item
Image may be NSFW.
Clik here to view.
I hope this helps you Image may be NSFW.
Clik here to view. Please clarify your scenario if it is MTS or MTO, it seems like MTS to me, and in MTS I am sorry but the links you are looking for cannot be established.
Best Regards,
Ameya B.