Message type: E = Error
Message class:  LB - Logistics: Batch - Management 
Message number: 212
Message text: The alternative UoM &1 of material &2 may not be deleted
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The SAP error message LB212 indicates that there is an issue with deleting an alternative unit of measure (UoM) for a material. This error typically arises when the alternative UoM is still in use or has dependencies that prevent its deletion.
Cause: Dependencies: The alternative UoM is being used in various transactions or master data records, such as purchase orders, sales orders, stock movements, or inventory records. Configuration Settings: The system may have specific settings or configurations that prevent the deletion of UoMs that are still active or linked to other data. Material Status: The material may be in a status that does not allow changes to its unit of measure settings.
Solution: Check Usage: Before attempting to delete the alternative UoM, check if it is being used in any transactions. You can do this by: Reviewing purchase orders, sales orders, or stock movements that reference the material. Checking inventory records to see if the alternative UoM is
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 INCLUDE M3004 OBJECT DOKU ID NAError message extract from SAP system. Copyright SAP SE. ...
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