How To Fix M9059 - Define a unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: M9 - Logistics Information System: Planning Data

• Message number: 059

• Message text: Define a 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.

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 M9059 - Define a unit of measure ?

  The SAP error message M9059, which states "Define a unit of measure," typically occurs when the system is unable to find a valid unit of measure (UoM) for a material or product in a transaction. This can happen in various scenarios, such as when creating or updating material master records, processing purchase orders, or handling inventory transactions.
  Cause:
  
  Missing Unit of Measure: The most common cause is that the unit of measure has not been defined for the material in the material master record.
  Incorrect Configuration: The unit of measure might not be properly configured in the system, or the relevant UoM is not assigned to the material.
  Data Inconsistency: There may be inconsistencies in the data, such as missing entries in the unit of measure tables.
  Transaction Context: The error can also occur if the transaction being performed requires a specific unit of measure that has not been defined.
  
  Solution:
  
  
  Define Unit of Measure in Material Master:
  
  Go to the Material Master (Transaction Code: MM01 or MM02).
  Enter the material number and select the appropriate views (e.g., Basic Data, Purchasing, Sales).
  Ensure that the unit of measure is defined in the relevant views. You can add or modify the UoM in the "Units of Measure" section.
  
  
  
  Check UoM Configuration:
  
  Use Transaction Code: CUNI to access the unit of measure configuration.
  Verify that the unit of measure you are trying to use is defined in the system and is active.
  
  
  
  Assign UoM to Material:
  
  If the material is already created, you can use Transaction Code: MM02 to add the missing unit of measure.
  Ensure that the UoM is assigned correctly in all relevant views.
  
  
  
  Check for Data Consistency:
  
  Run consistency checks or reports to identify any discrepancies in the material master data.
  Use Transaction Code: MM03 to review the material master data for any missing or incorrect entries.
  
  
  
  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 materials and their 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.
  SAP Help Documentation: Refer to SAP's official documentation for detailed guidance on managing material master data and units of measure.
  User Roles and Authorizations: Ensure that you have the necessary permissions to make changes to the material master data.
  
  By following these steps, you should be able to resolve the M9059 error and ensure that the unit of measure is properly defined for your materials in SAP.