How To Fix OIO402 - Could not perform unit conversion of &1 &2 &3 weight

SAP Error Message - Details

• Message type: E = Error

• Message class: OIO - Remote Logistics

• Message number: 402

• Message text: Could not perform unit conversion of &1 &2 &3 weight

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 OIO402 - Could not perform unit conversion of &1 &2 &3 weight ?

  The SAP error message OIO402, which states "Could not perform unit conversion of &1 &2 &3 weight," typically occurs when there is an issue with unit conversion in the context of weights in SAP. This error can arise in various scenarios, such as during the processing of goods movements, inventory management, or when dealing with material master data.
  Causes:
  
  
  Missing or Incorrect Unit of Measure (UoM) Configuration: The unit of measure for the weight might not be properly defined in the system, or the conversion factors between different units of measure may be missing or incorrect.
  
  
  Material Master Data Issues: The material in question may not have the necessary weight-related data configured in the material master record.
  
  
  Inconsistent Data: There may be inconsistencies in the data being processed, such as trying to convert between incompatible units.
  
  
  Custom Code or Enhancements: If there are custom developments or enhancements in the system that handle unit conversions, they may not be functioning correctly.
  
  
  Solutions:
  
  
  Check Unit of Measure Configuration:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) and verify that the necessary units of measure for weight are defined and that the conversion factors are correct.
  
  
  
  Review Material Master Data:
  
  Use transaction code MM03 to display the material master data and check the Basic Data and Purchasing views for the weight-related fields. Ensure that the weight unit of measure is correctly assigned.
  
  
  
  Check for Inconsistencies:
  
  Ensure that the data being processed is consistent and that the units of measure being used are compatible for conversion.
  
  
  
  Debug Custom Code:
  
  If there are any custom programs or enhancements that deal with unit conversions, review the code to ensure that it handles unit conversions correctly.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Unit of Measure (UoM): In SAP, units of measure are critical for ensuring that quantities are accurately represented and converted. Each material can have multiple units of measure defined.
  Material Master: The material master is a central repository of information about materials in SAP, and it includes various views that define how materials are handled in different processes.
  Transaction Codes: Familiarity with transaction codes like MM03, CUNI, and others related to material management can be helpful in troubleshooting.
  
  By following these steps, you should be able to identify and resolve the cause of the OIO402 error in SAP.