How To Fix LB504 - Units of measure used for material &1 are being changed

LB504 - Overview

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 504

• Message text: Units of measure used for material &1 are being changed

What causes this issue?

You are changing the <DS:DE.KZWSO>units of measure that are used</>
although proportion or product units have already been defined for
material &V1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

LB504 - Details

• The SAP error message LB504 indicates that there is an issue with the units of measure (UoM) for a specific material in the system. This error typically arises when there is an inconsistency or conflict in the unit of measure settings for a material, particularly when trying to perform operations such as goods movements, inventory management, or sales and distribution processes.
  
  Cause:
  
  Inconsistent UoM Settings: The material may have multiple units of measure defined, and the system is trying to change one of them, which can lead to conflicts.
  
  Configuration Issues: The configuration settings in the material master or the related UoM tables may not be aligned correctly.
  Data Migration Issues: If data has been migrated from another system, there may be discrepancies in the UoM definitions.
  User Input Errors: Manual entries or changes made by users that do not comply with the defined UoM settings can trigger this error.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the