How To Fix LB142 - Object table MARM_WS is not defined in the classification system

LB142 - Overview

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 142

• Message text: Object table MARM_WS is not defined in the classification system

What causes this issue?

You want to maintain <DS:DE.LRMEI_WS>proportion or product units</> for
a material.
The <DS:DE.ATWRT_WS>planned value</> for converting the proportion or
product unit to the <DS:DE.MEINS>base unit of measure</> is stored in
the classification system.
It is not possible to classify the material and the units of measure,
as the units of measure table (MARM_WS) is not defined as an object
table.

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?

Please inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LB142 - Object table MARM_WS is not defined in the classification system ?

  The SAP error message LB142, which states "Object table MARM_WS is not defined in the classification system," typically occurs when there is an issue with the classification system setup in SAP, particularly related to the material master data.
  
  Cause:
  
  Missing Object Table Definition: The object table MARM_WS is not defined in the classification system. This can happen if the object table was not created or if there is a configuration issue.
  Incorrect Configuration: The classification system may not be properly configured to recognize the object table associated with the material master.
  Transport Issues: If the system has recently undergone a transport of configuration or data, it is possible that the object table definition did not get transported correctly.
  
  
  Solution:
  
  
  Check Object Table Definition:
  
  Go to transaction code CL02 (Change Class) or CL01 (Create Class) and check if the object table MARM_WS is defined.
  If it is not defined, you may need to create it or adjust the configuration.
  
  
  
  Define