How To Fix COM_PRODUCT_UNIT028 - You have maintained alternative units of measure; enter a base UoM

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_PRODUCT_UNIT - Messages on Units of Measure

• Message number: 028

• Message text: You have maintained alternative units of measure; enter a base UoM

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_PRODUCT_UNIT028 - You have maintained alternative units of measure; enter a base UoM ?

  The SAP error message COM_PRODUCT_UNIT028 indicates that you have maintained alternative units of measure for a product, but you have not specified a base unit of measure (UoM). This error typically occurs in the context of product master data maintenance, particularly when dealing with materials in the SAP system.
  Cause:
  
  Alternative Units of Measure Defined: You have defined alternative units of measure for a material, but the system requires a base unit of measure to be specified.
  Missing Base UoM: The base unit of measure is essential for the system to understand how to convert between different units of measure.
  Configuration Issues: There may be configuration issues in the material master data settings that prevent the base UoM from being recognized.
  
  Solution:
  To resolve this error, you need to ensure that a base unit of measure is defined for the material. Here are the steps to do this:
  
  
  Access Material Master:
  
  Go to transaction code MM02 (Change Material) or MM01 (Create Material) in SAP.
  
  
  
  Select the Material:
  
  Enter the material number for which you are encountering the error.
  
  
  
  Navigate to Basic Data View:
  
  Select the appropriate views (usually Basic Data 1) where you can maintain the unit of measure.
  
  
  
  Define Base Unit of Measure:
  
  Ensure that a base unit of measure is entered in the relevant field. This is typically a unit that represents the primary way the material is measured (e.g., pieces, kilograms, liters).
  
  
  
  Maintain Alternative Units of Measure:
  
  If you have alternative units of measure, ensure they are correctly defined and that the conversion factors to the base unit of measure are specified.
  
  
  
  Save Changes:
  
  After making the necessary changes, save the material master record.
  
  
  
  Related Information:
  
  Unit of Measure (UoM): In SAP, the base unit of measure is the primary unit in which the material is managed. Alternative units of measure are used for sales, purchasing, or inventory management.
  Conversion Factors: When maintaining alternative units of measure, you must also define conversion factors to ensure that the system can accurately convert between the base unit and alternative units.
  Material Master Views: The material master has various views (Basic Data, Sales, Purchasing, etc.), and the base UoM is typically maintained in the Basic Data view.
  SAP Documentation: For more detailed information, refer to SAP Help documentation or consult with your SAP administrator for specific configurations related to your organization’s setup.
  
  By following these steps, you should be able to resolve the COM_PRODUCT_UNIT028 error and ensure that your material master data is correctly configured.