How To Fix XC401 - Duplicate classification of material &1

XC401 - Overview

• Message type: E = Error

• Message class: XC - Message Class for Core Interface

• Message number: 401

• Message text: Duplicate classification of material &1

What causes this issue?

No unique class assignment could be determined.

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

System Response

As SAP APO currently supports only simple classification for the CDP
(Characteristics Dependent Planning) classification system, no material
class will be transferred for this material.
If you have set the ERP classification system as the classification
system in SAP APO you can ignore this message.

How to fix this error?

Ensure that all classes used in the material master have the same name.
If necessary, change the names.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message XC401 - Duplicate classification of material &1 ?

  The SAP error message XC401: Duplicate classification of material &1 typically occurs when there is an attempt to classify a material that has already been classified with the same characteristics in the classification system. This can happen in the context of material management and classification in SAP, where materials are assigned to specific classes and characteristics.
  
  Cause:
  
  Duplicate Entry: The material you are trying to classify has already been assigned to the same class with the same characteristics.
  Incorrect Data Entry: There may be a mistake in the data entry process, leading to an attempt to classify the material multiple times with the same attributes.
  System Configuration: The classification system may not be configured correctly, leading to conflicts in how materials are classified.
  
  
  Solution:
  
  
  Check Existing Classifications: 
  
  Go to the classification view of the material in question and check if it is already classified under the same class and characteristics.
  If it is, you may need to