How To Fix WU027 - Material & with unit of measure & has already been entered

WU027 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 027

• Message text: Material & with unit of measure & has already been entered

What causes this issue?

You may only assign a material in a certain unit of measure to
exactly one promotion.

Error message extract from SAP system. Copyright SAP SE.

WU027 - Details

• The SAP error message WU027 typically indicates that there is an issue with the material and its unit of measure (UoM) in the system. This error usually occurs when you are trying to enter a material that has already been recorded in the system with a specific unit of measure, and the system does not allow duplicate entries for the same material and UoM combination.
  
  Cause:
  
  Duplicate Entry: The material you are trying to enter already exists in the system with the same unit of measure.
  Incorrect UoM: You may be trying to use a unit of measure that is not valid for the material.
  
  Configuration Issues: There may be issues with the configuration of material master data or unit of measure settings in the system.
  
  
  Solution:
  
  Check Existing Entries: Verify if the material and unit of measure combination already exists in the system. You can do this by using transaction codes like MM03 (Display Material)