How To Fix LB145 - You have already marked unit of measure & as leading unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 145

• Message text: You have already marked unit of measure & as leading unit of measure

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LB145 - You have already marked unit of measure & as leading unit of measure ?

  The SAP error message LB145, which states "You have already marked unit of measure & as leading unit of measure," typically occurs in the context of material master data or when dealing with units of measure in inventory management. This error indicates that the unit of measure you are trying to set as the leading unit of measure has already been designated as such for the material in question.
  Cause:
  
  Duplicate Assignment: The unit of measure you are trying to mark as leading is already marked as the leading unit of measure for that material.
  Configuration Issues: There may be issues in the configuration of the material master or the units of measure settings in the system.
  Data Entry Error: The user may have inadvertently attempted to set the same unit of measure multiple times.
  
  Solution:
  
  
  Check Existing Settings:
  
  Go to the material master record (transaction code MM03) and check the units of measure section to see which unit is currently marked as the leading unit of measure.
  If the unit you are trying to set is already marked as leading, you do not need to change anything.
  
  
  
  Change the Leading Unit of Measure:
  
  If you need to change the leading unit of measure, you will need to first unmark the current leading unit (if applicable) before marking the desired unit as leading.
  This can be done in the material master (transaction code MM02) under the relevant views (e.g., Basic Data, Purchasing, Sales).
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to units of measure and material master data to ensure you are following the correct procedures.
  
  
  
  User Authorization:
  
  Ensure that you have the necessary authorizations to make changes to the material master data.
  
  
  
  Contact Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  MM01 (Create Material), MM02 (Change Material), MM03 (Display Material)
  
  
  Unit of Measure Configuration: 
  
  The configuration of units of measure can be found in the customizing settings under Logistics > Material Management > Material Master > Basic Settings > Units of Measure.
  
  
  SAP Notes: 
  
  Check for any relevant SAP Notes that might address specific issues or bugs related to this error message.
  
  
  
  By following these steps, you should be able to resolve the error message LB145 and manage your units of measure effectively in SAP.