How To Fix M9055 - Enter a unit of measurement that has been defined in Customizing

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 055

• Message text: Enter a unit of measurement that has been defined in Customizing

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 M9055 - Enter a unit of measurement that has been defined in Customizing ?

  The SAP error message M9055, which states "Enter a unit of measurement that has been defined in Customizing," typically occurs when a user attempts to enter a unit of measurement (UoM) in a transaction or document that is not recognized by the system. This can happen in various modules, such as Materials Management (MM) or Sales and Distribution (SD), where units of measurement are crucial for inventory and sales processes.
  Cause:
  
  Undefined Unit of Measurement: The unit of measurement you are trying to use has not been defined in the system's customizing settings.
  Incorrect UoM Code: The UoM code entered may be misspelled or incorrectly formatted.
  Missing Configuration: The unit of measurement may not be assigned to the relevant material or product in the system.
  User Authorization: The user may not have the necessary permissions to access or use certain units of measurement.
  
  Solution:
  To resolve the M9055 error, follow these steps:
  
  
  Check UoM Definition:
  
  Go to the SAP Customizing Implementation Guide (IMG).
  Navigate to Logistics - General > Unit of Measure > Define Units of Measure.
  Verify if the unit of measurement you are trying to use is listed. If it is not, you will need to create it.
  
  
  
  Create or Modify UoM:
  
  If the UoM is missing, you can create a new one by clicking on the "New Entries" button and filling in the required fields (e.g., UoM code, description, etc.).
  Ensure that the UoM is set up correctly, including any necessary conversions to other units.
  
  
  
  Assign UoM to Material:
  
  If the UoM is defined but not assigned to a specific material, go to the material master record (transaction code MM02).
  Check the "Basic Data" and "Purchasing" views to ensure the UoM is assigned correctly.
  
  
  
  Check User Permissions:
  
  Ensure that the user has the necessary authorizations to use the specific UoM. This may involve checking roles and authorizations in the user profile.
  
  
  
  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 or products in question.
  
  
  
  Related Information:
  
  Unit of Measurement Types: SAP allows for various types of units of measurement, such as base units, alternative units, and sales units. Understanding these can help in configuring and using UoMs effectively.
  Conversion Factors: If you are using multiple units of measurement, ensure that conversion factors are correctly defined in the system.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the M9055 error.
  
  By following these steps, you should be able to resolve the M9055 error and successfully enter the required unit of measurement in your SAP transactions.