How To Fix 88020 - Unit of measure &1 is not defined for material &2&3 as unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: 88 - REA Processing

• Message number: 020

• Message text: Unit of measure &1 is not defined for material &2&3 as unit of measure

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 88020 - Unit of measure &1 is not defined for material &2&3 as unit of measure ?

  The SAP error message "88020 Unit of measure &1 is not defined for material &2&3 as unit of measure" typically indicates that the specified unit of measure (UoM) for a material is not defined in the system. This can occur in various scenarios, such as when trying to create a purchase order, sales order, or during inventory management activities.
  Cause:
  
  Missing UoM Definition: The unit of measure you are trying to use for the material is not defined in the material master record.
  Incorrect UoM Usage: The UoM being used may not be valid for the specific transaction or context.
  Material Master Data Issues: The material master data may not be properly maintained, leading to inconsistencies.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to transaction code MM03 (Display Material) and enter the material number.
  Check the "Basic Data" and "Purchasing" views to see if the unit of measure is defined.
  If the UoM is missing, you will need to add it.
  
  
  
  Define Unit of Measure:
  
  If the UoM is not defined, you can add it by using transaction code MM02 (Change Material).
  Navigate to the relevant views (e.g., Basic Data, Purchasing) and add the required UoM.
  
  
  
  Check UoM Conversion:
  
  Ensure that the UoM conversion factors are correctly defined if you are using multiple units of measure for the same material.
  
  
  
  Check UoM Settings:
  
  Ensure that the UoM is set up in the system. You can check this in transaction code CUNI (Unit of Measure Conversion) to see if the UoM exists in the system.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct UoM to use, consult your organization's documentation or speak with a colleague who is knowledgeable about the material specifications.
  
  
  
  Related Information:
  
  Unit of Measure Types: Understand the different types of units of measure (e.g., base unit, alternative unit) and how they relate to each other.
  Material Master Views: Familiarize yourself with the various views in the material master that pertain to UoM.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or bugs related to UoM handling in your version of SAP.
  
  By following these steps, you should be able to resolve the error and ensure that the unit of measure is correctly defined for the material in question.