How To Fix WU038 - Please enter unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 038

• Message text: Please enter unit of measure

What causes this issue?

You should always create a promotion item with the sales unit.

How to fix this error?

Display the permitted values using the possible entries button and
select the desired unit of measure.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU038 - Please enter unit of measure ?

  The SAP error message WU038 ("Please enter unit of measure") typically occurs when a user attempts to perform an action that requires a unit of measure (UoM) but has not provided one. This can happen in various contexts, such as during the creation of a material document, sales order, or inventory management transaction.
  Cause:
  
  Missing Unit of Measure: The most common cause is that the unit of measure field is left blank when it is required.
  Incorrect Configuration: The material master may not be properly configured with the necessary units of measure.
  Data Entry Error: Users may inadvertently skip the unit of measure field or enter an invalid value.
  Custom Development: If there are custom programs or enhancements, they may not handle the unit of measure correctly.
  
  Solution:
  
  Enter Unit of Measure: Ensure that you fill in the unit of measure field when prompted. This is often a dropdown list where you can select the appropriate UoM.
  Check Material Master: Verify that the material master record has the correct units of measure defined. You can do this by:
  
  Navigating to the material master (transaction code MM03).
  Checking the "Basic Data" and "Sales Org. Data" views for the UoM settings.
  
  
  Review Configuration: If you have access, check the configuration settings in the SAP system to ensure that the units of measure are set up correctly. This can be done in the SPRO transaction under:
  
  Logistics > Material Management > Material Master > Basic Settings > Define Units of Measure.
  
  
  Validate Input: Ensure that any custom programs or enhancements are correctly handling the unit of measure input.
  Consult Documentation: If the issue persists, refer to SAP documentation or consult with your SAP support team for further assistance.
  
  Related Information:
  
  Unit of Measure Types: SAP allows for different types of units of measure (e.g., base unit, sales unit, purchase unit). Make sure you are using the correct type for your transaction.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MM01 (Create Material)
  MM02 (Change Material)
  MM03 (Display Material)
  ME21N (Create Purchase Order)
  VA01 (Create Sales Order)
  
  
  User Training: Ensure that users are trained on the importance of entering the unit of measure and how to do it correctly.
  
  By following these steps, you should be able to resolve the WU038 error and proceed with your transaction in SAP.