Diagnosis
You want to change the bill of material.
As this BOM is allocated to other plants, the changes become effectivein all the plants to which the BOM is allocated.
You see this warning message because the system makes the requiredchecks (such as checking for a material master) in all the plants, andthe change you want to make may be rejected. This would be the case,for example, if the material master for a new material item is notmaintained in all plants.

Procedure
If you want to make the change, confirm this warning message.