How To Fix /SAPAPO/MC01406 - Reference product uses a different class

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 406

• Message text: Reference product uses a different class

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01406 - Reference product uses a different class ?

  The SAP error message /SAPAPO/MC01406 indicates that there is an issue with the reference product in the Advanced Planning and Optimization (APO) module. Specifically, it means that the reference product you are trying to use is associated with a different class than the one expected by the system. This can occur in scenarios where product master data is being maintained or when trying to create or modify planning objects.
  Cause:
  
  Class Mismatch: The reference product belongs to a different classification system or class than the one defined for the product you are working with.
  Incorrect Configuration: The configuration of the product master data may not align with the expected classes or characteristics.
  Data Migration Issues: If data has been migrated from another system, there may be inconsistencies in the classification of products.
  
  Solution:
  
  
  Check Product Class: Verify the class of the reference product and ensure it matches the class of the product you are working with. You can do this by navigating to the product master data in the SAP GUI and checking the classification.
  
  
  Update Product Master Data: If the reference product is incorrect, you may need to update the product master data to ensure that it uses the correct class. This can involve changing the classification or reassigning the product to the correct class.
  
  
  Review Configuration: Ensure that the configuration settings for product classes and characteristics are correctly set up in the system. This may involve checking the customizing settings in the SAP system.
  
  
  Consult Documentation: Review any relevant SAP documentation or notes that may provide additional context or solutions for this specific error message.
  
  
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance. They may provide insights based on the specific configuration and version of your SAP system.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CT04 (Class Maintenance) or MM02 (Change Material) to check and modify the class assignments.
  SAP Notes: Look for SAP Notes related to this error message for any patches or updates that may address the issue.
  APO Documentation: Review the APO documentation for best practices on managing product classifications and reference products.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.