How To Fix /CWM/MD018 - Logistical base unit of measure becomes valuation unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: /CWM/MD -

• Message number: 018

• Message text: Logistical base unit of measure becomes valuation unit of measure

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CWM/MD018 - Logistical base unit of measure becomes valuation unit of measure ?

  The SAP error message /CWM/MD018 indicates that there is a conflict between the logistical base unit of measure and the valuation unit of measure for a material. This typically occurs in the context of materials management and inventory valuation in SAP.
  Cause:
  The error arises when the system detects that the logistical base unit of measure (the unit used for inventory management and logistics) is being set to the same value as the valuation unit of measure (the unit used for financial valuation). This situation is not allowed because it can lead to inconsistencies in inventory management and financial reporting.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03).
  Check the "Basic Data" and "Purchasing" views to verify the units of measure.
  Ensure that the logistical base unit of measure and the valuation unit of measure are different.
  
  
  
  Adjust Units of Measure:
  
  If they are the same, you will need to change one of them. Typically, the logistical base unit of measure should be a unit that is practical for inventory management (e.g., pieces, boxes), while the valuation unit of measure can be a different unit that is suitable for financial reporting (e.g., kilograms, liters).
  You can change the unit of measure in the material master using transaction code MM02.
  
  
  
  Check Configuration Settings:
  
  If the issue persists, check the configuration settings in the SAP system. This may involve looking at the settings in the Material Management (MM) module to ensure that the units of measure are configured correctly.
  You can access the configuration settings through transaction code SPRO and navigate to the relevant sections under Material Management.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help notes related to unit of measure settings to ensure compliance with best practices.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test to ensure that the error no longer occurs when processing transactions related to the material.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  SPRO: Customizing Implementation Guide
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error message.
  
  
  User Roles: Ensure that you have the necessary authorizations to make changes to the material master data.
  
  
  By following these steps, you should be able to resolve the /CWM/MD018 error and ensure that your material master data is correctly configured.