How To Fix M9056 - Only enter units that are maintained in the system

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 056

• Message text: Only enter units that are maintained in the system

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 M9056 - Only enter units that are maintained in the system ?

  The SAP error message M9056 "Only enter units that are maintained in the system" typically occurs when you are trying to enter a unit of measure (UoM) in a transaction or document that is not defined or maintained in the SAP system. This can happen in various modules, such as Materials Management (MM) or Sales and Distribution (SD), where units of measure are crucial for inventory management, sales orders, and other processes.
  Cause:
  
  Undefined Unit of Measure: The unit of measure you are trying to use is not defined in the system.
  Incorrect Configuration: The unit of measure may not be properly configured in the relevant master data (e.g., material master, vendor master).
  Data Entry Error: There may be a typographical error in the unit of measure being entered.
  
  Solution:
  
  
  Check Unit of Measure Configuration:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) or OMN1 (Define Units of Measure) to check if the unit of measure is defined in the system.
  If it is not defined, you will need to create it.
  
  
  
  Create or Maintain Unit of Measure:
  
  If the unit of measure is missing, you can create it by navigating to the appropriate configuration path in SPRO:
  
  SPRO > Logistics - General > Unit of Measure > Define Units of Measure.
  
  
  Ensure that the unit of measure is correctly set up with the necessary conversion factors if applicable.
  
  
  
  Check Material Master:
  
  If the error occurs while working with a specific material, check the material master data using transaction code MM03.
  Ensure that the unit of measure is maintained in the material master under the relevant views (e.g., Basic Data, Purchasing, Sales).
  
  
  
  Verify Data Entry:
  
  Double-check the unit of measure you are entering for any typographical errors.
  Ensure that you are using the correct abbreviation or code for the unit of measure.
  
  
  
  Consult Documentation:
  
  If you are unsure about the units of measure that should be used, refer to your organization's documentation or consult with your SAP administrator.
  
  
  
  Related Information:
  
  Unit of Measure Types: SAP supports various types of units of measure, such as base units, alternative units, and sales units. Understanding these can help in proper configuration.
  Unit of Measure Conversion: If you are dealing with multiple units of measure, ensure that conversion factors are set up correctly to avoid discrepancies.
  User Authorizations: Ensure that you have the necessary authorizations to create or modify units of measure in the system.
  
  By following these steps, you should be able to resolve the M9056 error and ensure that the units of measure used in your transactions are properly maintained in the SAP system.