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

/ISDFPS/MM590 - Overview

• 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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/ISDFPS/MM590 - Details

• 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