I want to create an special production order,
but it seem that the special production order still control by the level of the bom,
which mean for example
in my BOM need to create Semi-Finished Good A the Semi-Finished Good B
in Special, I want to First create Semi-Finished Good B then only Semi-Finished Good A
but the system don allow,
it stated there 'Item already defined at a higher level in the production tree".
As I understand, Special Production Order should not be control by BOM, it is a bug???