How To Fix /SAPAPO/MC01304 - Key &&:Required characteristic &1 has not been assigned vals in class &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 304

• Message text: Key &&:Required characteristic &1 has not been assigned vals in class &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01304 - Key &&:Required characteristic &1 has not been assigned vals in class &2 ?

  The SAP error message /SAPAPO/MC01304 indicates that a required characteristic in a class has not been assigned any values. This error typically occurs in the context of Advanced Planning and Optimization (APO) when working with product master data or class assignments.
  Cause:
  The error is triggered when:
  
  A characteristic that is marked as required in a class is not assigned any values for a specific object (e.g., a product).
  The system expects certain characteristics to have values for planning or execution processes, but they are missing.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Characteristic and Class:
  
  The error message will specify the characteristic (&1) and the class (&2) that are causing the issue. Take note of these details.
  
  
  
  Check Class Assignment:
  
  Go to the class in transaction CL02 (Change Class) or CL03 (Display Class) and verify the characteristics assigned to it.
  Ensure that the required characteristic is indeed part of the class.
  
  
  
  Assign Values to the Characteristic:
  
  If the characteristic is required, you need to assign valid values to it for the relevant object (e.g., product).
  You can do this in the product master data using transaction CIF (Core Interface) or directly in the product master data transaction (e.g., MM02 for material).
  
  
  
  Check Product Master Data:
  
  Navigate to the product master data and ensure that the required characteristic has been filled with appropriate values.
  If the product is not assigned to the class, you may need to assign it using transaction CT04 (Create Class) or CT05 (Change Class).
  
  
  
  Recheck Planning Object:
  
  After making the necessary changes, recheck the planning object to ensure that the error no longer appears.
  
  
  
  Transport Changes:
  
  If you are working in a development environment, ensure that any changes made are transported to the appropriate environment (e.g., quality or production).
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CL02 / CL03: Class maintenance
  MM02: Change material master
  CIF: Core Interface for integration
  CT04 / CT05: Class creation and change
  
  
  
  Documentation:
  
  Refer to SAP Help documentation for detailed information on class and characteristic management in SAP APO.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that may address specific issues or provide additional guidance related to this error message.
  
  
  
  By following these steps, you should be able to resolve the error and ensure that the required characteristics are properly assigned in your SAP system.