2872587 - Use "Special" Type Production Order to Set the Parent Item as a Child Item
You cannot use a parent item as a child item in a production order.
Reproducing the issue
- Go to Production → Production Order.
- Try to create a production order in which you use an item to produce itself.
You cannot set the child item to be the same as the parent item in Production → Bill of Materials or a Standard/Disassembly type production order.
Set the Type field of the production order as Special. Then you can set the child item to be the same as the parent item.