SAP Message 29140 - Base unit of measure & cannot be copied

Diagnosis
You want to create a BOM by copying an existing BOM (reference).
As the base unit of measure of the reference BOM is different from thebase unit of measure of the material for which the new BOM is to becreated, it cannot be copied into the new BOM. For this reason, thedefault base unit of measure for the new BOM is that of the materialfor which the BOM is being created.
The base unit of measure of a BOM must be the same as for the materialis represents.

Procedure
You have two options:
Press ENTER. You see the reference BOM.

  • Select the item you want to copy and choose function Copy. Now
    • the BOM header and all selected items are copied. Only the base unit ofmeasure is reset for the BOM.
    If you decide as a result of this warning that you do not want to usethis reference BOM, choose function New entry.
    • Correct your entry or cancel the transaction Copy from....