Message type: E = Error
Message class:  LB - Logistics: Batch - Management 
Message number: 090
Message text: Ref. material base UoM differs => units of measure not transferred
The <DS:GLOS.Base_unit_of_measure>base unit of measure</> of the
reference material differs from that of the current material.
The <DS:DE.LRMEI_WS>proportion or product units</> are not transferred
from the reference material.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message LB090, which states "Ref. material base UoM differs => units of measure not transferred," typically occurs in the context of material management and inventory management processes. This error indicates that there is a mismatch between the unit of measure (UoM) of the reference material and the unit of measure being used in the transaction.
Cause: Unit of Measure Mismatch: The primary cause of this error is that the base unit of measure (UoM) of the reference material does not match the UoM of the material being processed in the transaction. This can happen during goods movements, stock transfers, or when creating purchase orders.
Configuration Issues: There may be configuration issues in the material master data or in the settings for the specific transaction type. Material Master Data: The material master data for the reference material may not be set up correctly, leading to discrepancies in UoM.
Solution: Check Material Master Data: Go to
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