How To Fix MDM_CLF_LEAN255 - Class &1 (class type &2) has default data for base unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: MDM_CLF_LEAN - MDM Lean Classification - Reuse Parts

• Message number: 255

• Message text: Class &1 (class type &2) has default data for base unit of measure

What causes this issue?

You have used a class that has a value defined for Base Unit of Measure
under <ZK>Default data for BOM component</> on the <ZK>Addnl data</>
(Additional Data) tab.
Such classes are not supported in MDG.

System Response

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

How to fix this error?

If you don?t need this default value, remove it so that you can use the
class.
If you want to keep this default value contact your system
administrator.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDM_CLF_LEAN255 - Class &1 (class type &2) has default data for base unit of measure ?

  The SAP error message MDM_CLF_LEAN255 indicates that there is an issue with the default data for the base unit of measure in a specific class and class type. This error typically arises in the context of Material Master Data Management (MDM) or when dealing with classification in SAP.
  
  Cause:
  The error occurs when:
  
  A class (identified by &1) of a certain class type (identified by &2) is missing the necessary default data for the base unit of measure.
  The system expects that every class should have a defined base unit of measure, but it is either not set or incorrectly configured.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Class Configuration:
  
  Go to the transaction code CL02 (Change Class) or CL03 (Display Class).
  Enter the class name and class type to check the configuration.
  Ensure that the class has a valid base unit of measure defined.
  
  
  
  Define Base Unit of Measure:
  
  If the base unit of measure is missing,