BOM group & for equipment & & not valid on &

What causes this issue?

You want to display or change BOM group &V1& for equipment &V2& in
plant &V3&, and have entered the date &V4& in the <LS>Valid from</>
field.
However, you cannot process the BOM, because it is not valid on this
date.

How to fix this error?

If you want to display the BOM group over its entire validity period,
proceed as follows:
Select <LS>BOM group -> Display</>.
Enter the special character "!" at the beginning of the fields
<LS>Valid from</> and <LS>Valid to</>.
The system displays a summarized BOM for the BOM group.
On the alternative overview, you see a list of the validity periods of
the individual BOMs in this BOM group.

Error message extract from SAP system. Copyright SAP SE.