How To Fix UCUM028 - Value combination &1 is not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: UCUM - Messages for Monitor

• Message number: 028

• Message text: Value combination &1 is not valid

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 UCUM028 - Value combination &1 is not valid ?

  The SAP error message UCUM028, which states "Value combination &1 is not valid," typically occurs in the context of SAP's Unit of Measure (UoM) or related configuration settings. This error indicates that the system has encountered a combination of values that does not conform to the expected or defined parameters in the system.
  Causes:
  
  Invalid Unit of Measure (UoM): The combination of units being used may not be valid for the specific context (e.g., a unit of measure that is not allowed for a particular material or transaction).
  Configuration Issues: There may be issues in the configuration of the units of measure in the system, such as missing or incorrectly defined conversion factors.
  Data Entry Errors: Users may have entered incorrect or incompatible values in the transaction or master data.
  Missing Master Data: The relevant master data (like material master or vendor master) may not be set up correctly, leading to invalid combinations.
  Custom Logic: If there are custom developments or enhancements in the system, they might be causing the error due to unexpected value combinations.
  
  Solutions:
  
  
  Check Unit of Measure Configuration:
  
  Go to the configuration settings for units of measure in SAP (Transaction Code: OME1 or OME2) and verify that the units are correctly defined and that the conversion factors are set up properly.
  
  
  
  Review Master Data:
  
  Check the material master or relevant master data to ensure that the units of measure assigned are valid and that all necessary data is maintained.
  
  
  
  Validate Data Entry:
  
  Ensure that the values being entered in the transaction are correct and conform to the expected formats and combinations.
  
  
  
  Consult Documentation:
  
  Review any documentation related to the specific transaction or process you are working with to ensure compliance with the expected value combinations.
  
  
  
  Debugging:
  
  If you have access to development tools, you can debug the transaction to identify where the error is being triggered and what specific values are causing the issue.
  
  
  
  Contact Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error message.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any updates or patches related to this error message. SAP frequently releases notes that address specific issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to check the material master data.
  Unit of Measure Tables: Review tables like T006 (Units of Measure) and T006A (Unit of Measure Descriptions) for additional insights into the configuration.
  
  By following these steps, you should be able to identify and resolve the issue related to the UCUM028 error message in SAP.