How To Fix DMU342 - Decimals are not supported for unit of measure &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMU - Digital Mock Up (DMU)

• Message number: 342

• Message text: Decimals are not supported for unit of measure &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMU342 - Decimals are not supported for unit of measure &1 ?

  The SAP error message DMU342, which states "Decimals are not supported for unit of measure &1," typically occurs when you are trying to use a unit of measure (UoM) that is defined to not allow decimal values in a context where decimals are being used. This can happen in various scenarios, such as during the entry of quantities in transactions, material master data, or when processing documents.
  Cause:
  
  Unit of Measure Configuration: The unit of measure (UoM) you are trying to use is configured in the system to not allow decimal places. For example, units like "pieces" or "items" may not support decimals, while units like "liters" or "kilograms" might.
  Data Entry Error: You may be inadvertently entering a decimal value for a UoM that does not support it.
  Material Master Settings: The material master record may have been set up incorrectly, leading to the use of an inappropriate UoM for the transaction.
  
  Solution:
  
  
  Check UoM Configuration:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) or OMN3 (Define Units of Measure) to check the settings for the specific unit of measure.
  Ensure that the UoM is configured to allow decimals if that is required for your business process.
  
  
  
  Change the UoM:
  
  If the UoM does not support decimals and you need to enter a decimal quantity, consider changing the UoM to one that does support decimals. For example, switch from "pieces" to "kilograms" if applicable.
  
  
  
  Review Material Master Data:
  
  Check the material master data using transaction code MM03 (Display Material) to see the UoM settings for the material in question.
  Ensure that the base unit of measure and any alternative units of measure are correctly defined.
  
  
  
  Data Entry:
  
  If you are entering data manually, double-check the quantity you are entering to ensure it does not contain decimal values when using a non-decimal UoM.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for specific guidelines related to UoM configurations and best practices.
  
  
  
  Related Information:
  
  Unit of Measure Types: Understand the different types of units of measure in SAP and their configurations.
  Material Management (MM) Module: Familiarize yourself with how UoMs are used within the MM module, especially in purchasing and inventory management.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide updates related to UoM handling.
  
  By following these steps, you should be able to resolve the DMU342 error and ensure that your unit of measure settings align with your business requirements.