How To Fix /ISDFPS/MM590 - Enter a unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/MM -

• Message number: 590

• Message text: Enter 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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/MM590 - Enter a unit of measure ?

  The SAP error message /ISDFPS/MM590 Enter a unit of measure typically occurs in the context of materials management or inventory management within the SAP system. This error indicates that a required unit of measure (UoM) has not been specified for a particular transaction or entry, which is essential for processing materials correctly.
  Cause:
  
  Missing Unit of Measure: The most common cause is that the user has not entered a unit of measure in a transaction where it is mandatory.
  Configuration Issues: There may be issues with the configuration of material master data, where the unit of measure is not defined correctly.
  Data Entry Errors: Users may overlook entering the unit of measure due to oversight or misunderstanding of the required fields.
  
  Solution:
  
  Enter a Unit of Measure: The immediate solution is to ensure that you enter a valid unit of measure in the relevant field when prompted by the error message.
  Check Material Master Data: Verify that the material master data is correctly set up with the appropriate units of measure. You can do this by:
  
  Navigating to the material master record (Transaction Code: MM03).
  Checking the "Basic Data" and "Purchasing" views to ensure that the unit of measure is defined.
  
  
  Review Transaction Settings: If the error occurs during a specific transaction (like goods receipt, goods issue, etc.), ensure that the transaction settings are correctly configured to require a unit of measure.
  User Training: Provide training to users on the importance of entering a unit of measure and how to do it correctly in the system.
  
  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 the material.
  Configuration Settings: Review the configuration settings in the SAP system related to units of measure, which can be found in the IMG (Implementation Guide) under Logistics > General > Material Master > Settings for Key Fields.
  SAP Notes: Check for any relevant SAP Notes or documentation that may address specific issues or updates related to this error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP documentation for further troubleshooting.