How To Fix MA273 - Conversion factor not set

SAP Error Message - Details

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 273

• Message text: Conversion factor not set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MA273 - Conversion factor not set ?

  The SAP error message MA273 "Conversion factor not set" typically occurs in the context of material management, particularly when dealing with material master data or when trying to perform transactions that involve unit of measure conversions. This error indicates that the system cannot find a conversion factor for the specified units of measure for a material.
  Cause:
  
  Missing Conversion Factor: The most common cause is that the conversion factor between the base unit of measure and the alternative unit of measure is not defined in the material master data.
  Incorrect Unit of Measure: The unit of measure being used in the transaction may not be correctly defined or may not exist in the system.
  Material Master Data Issues: The material master record may not be fully maintained, or there may be inconsistencies in the data.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM02 or MM03).
  Check the "Units of Measure" view to ensure that the conversion factors are correctly defined for the relevant units of measure.
  If the conversion factor is missing, you can add it by editing the material master record.
  
  
  
  Define Conversion Factors:
  
  In the "Units of Measure" view, ensure that the conversion factors between the base unit and the alternative units are set correctly.
  For example, if you have a base unit of measure as "KG" and an alternative unit as "G", you should define the conversion factor (e.g., 1 KG = 1000 G).
  
  
  
  Check Unit of Measure Settings:
  
  Ensure that the units of measure you are using are defined in the system. You can check this in the configuration settings (transaction code OMN1).
  Make sure that the units of measure are active and correctly configured.
  
  
  
  Review Transaction Data:
  
  If the error occurs during a specific transaction (e.g., goods movement, inventory management), review the transaction data to ensure that the correct units of measure are being used.
  
  
  
  Consult Documentation:
  
  If you are unsure about how to proceed, refer to SAP documentation or consult with your SAP support team for guidance on maintaining material master data.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM02: Change Material Master
  MM03: Display Material Master
  OMN1: Define Units of Measure
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues 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 MA273 error and ensure that the conversion factors are correctly set for your materials.