How To Fix W+391 - Quantities are allowed a maximum of one decimal place

SAP Error Message - Details

• Message type: E = Error

• Message class: W+ -

• Message number: 391

• Message text: Quantities are allowed a maximum of one decimal place

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W+391 - Quantities are allowed a maximum of one decimal place ?

  The SAP error message W+391 indicates that the system has encountered a situation where a quantity is being entered with more decimal places than allowed. Specifically, this error message states that quantities are permitted to have a maximum of one decimal place.
  Cause:
  This error typically occurs in scenarios where:
  
  Quantity Entry: You are trying to enter a quantity in a transaction (such as goods movement, inventory management, or sales order) that has more than one decimal place (e.g., entering 10.25 instead of 10.2).
  Configuration Settings: The configuration settings in the material master or the relevant document type may restrict the number of decimal places for quantity fields.
  Unit of Measure (UoM): The unit of measure associated with the material may be defined to allow only one decimal place.
  
  Solution:
  To resolve the W+391 error, you can take the following steps:
  
  
  Check Quantity Input: Ensure that the quantity you are entering has only one decimal place. For example, if you need to enter 10.2, avoid entering 10.25 or any other value with more than one decimal.
  
  
  Review Material Master Settings:
  
  Go to the material master record (transaction code MM03).
  Check the "Basic Data" and "Purchasing" views to see the decimal places defined for the unit of measure.
  If necessary, adjust the unit of measure settings to allow for the required decimal places, but be cautious as this may affect other transactions.
  
  
  
  Check Unit of Measure Configuration:
  
  Navigate to the configuration settings for units of measure (transaction code OME1).
  Verify the decimal places allowed for the specific unit of measure you are using.
  
  
  
  Consult with SAP Basis or Functional Team: If you are unsure about making changes to the configuration, consult with your SAP Basis or functional team to ensure that any changes made are in line with business processes and do not disrupt other functionalities.
  
  
  Testing: After making any changes, perform a test transaction to ensure that the error no longer occurs.
  
  
  Related Information:
  
  Transaction Codes: MM03 (Display Material), OME1 (Maintain Units of Measure).
  Documentation: Refer to SAP Help documentation for more details on material master data and unit of measure settings.
  User Training: Ensure that users are trained on the correct format for entering quantities to prevent this error in the future.
  
  By following these steps, you should be able to resolve the W+391 error and successfully enter the required quantities in your SAP system.