How To Fix /SAPAPO/MC01403 - Multiple classification: Several classes with the same class type exist

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 403

• Message text: Multiple classification: Several classes with the same class type exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01403 - Multiple classification: Several classes with the same class type exist ?

  The SAP error message /SAPAPO/MC01403 indicates that there is a problem with multiple classifications in the system. Specifically, it means that there are several classes with the same class type assigned to a single object, which is not allowed in SAP APO (Advanced Planning and Optimization).
  Cause:
  The error typically arises due to one of the following reasons:
  
  Duplicate Class Assignments: The same class type has been assigned multiple times to a single object (e.g., a material or a product).
  Configuration Issues: There may be issues in the configuration of the classification system, leading to the creation of multiple classes of the same type.
  Data Migration Issues: If data has been migrated from another system, it may have resulted in duplicate class assignments.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Class Assignments:
  
  Go to the classification view of the object (e.g., material) in question.
  Review the assigned classes and identify any duplicates.
  
  
  
  Remove Duplicate Classes:
  
  If you find multiple classes of the same type assigned, remove the duplicates. You can do this by editing the classification data for the object and ensuring that only one class of each type is assigned.
  
  
  
  Review Configuration:
  
  Check the configuration of the classification system to ensure that it is set up correctly and does not allow for multiple classes of the same type to be assigned.
  
  
  
  Data Cleanup:
  
  If the issue arose from data migration, consider performing a data cleanup to remove any inconsistencies or duplicates.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed guidance on classification and class types.
  
  
  
  Testing:
  
  After making changes, test the system to ensure that the error no longer occurs and that the classification works as intended.
  
  
  
  Related Information:
  
  Classification in SAP: Understanding how classification works in SAP APO is crucial. Each class type can have specific characteristics, and the system expects unique assignments to avoid confusion.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Support: If the issue persists after following the above steps, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to resolve the error and ensure that your classification system functions correctly.