How To Fix M3091 - & not a valid unit of weight

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 091

• Message text: & not a valid unit of weight

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 M3091 - & not a valid unit of weight ?

  The SAP error message M3091, which states "Not a valid unit of weight," typically occurs when there is an issue with the unit of measure (UoM) being used in a transaction related to materials management, such as during goods movements, inventory management, or when creating or updating material master records.
  Cause:
  
  Invalid Unit of Measure: The unit of measure specified in the transaction does not exist in the system or is not defined as a valid unit of weight.
  Configuration Issues: The unit of measure may not be properly configured in the SAP system, or it may not be assigned to the material in question.
  Material Master Data: The material master record may not have the correct unit of measure settings, or the unit of measure may not be maintained for the specific material.
  Data Entry Errors: There may be a typographical error in the unit of measure entered by the user.
  
  Solution:
  
  
  Check Unit of Measure: Verify that the unit of measure you are trying to use is valid and exists in the system. You can do this by navigating to the relevant configuration settings in SAP.
  
  Use transaction code CUNI to check and maintain units of measure.
  
  
  
  Material Master Data: Ensure that the material master record has the correct unit of measure assigned.
  
  Use transaction code MM02 to change the material master and check the "Basic Data" and "Purchasing" views for the correct UoM settings.
  
  
  
  Configuration: If the unit of measure is not defined, you may need to create it or configure it properly in the system.
  
  Ensure that the unit of measure is set up in the appropriate UoM group and that it is marked as a valid unit of weight.
  
  
  
  Data Entry: Double-check the data entry for any typographical errors. Ensure that the unit of measure is entered correctly in the transaction.
  
  
  Consult Documentation: If you are unsure about the correct unit of measure to use, consult the relevant documentation or guidelines for your organization.
  
  
  Related Information:
  
  Unit of Measure Groups: SAP allows you to define groups of units of measure that can be used interchangeably. Make sure the unit of measure is part of the correct group.
  Weight Units: Common weight units in SAP include KG (kilograms), G (grams), LB (pounds), etc. Ensure that the unit you are using is appropriate for the material.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message or provide additional guidance.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in materials management.