How To Fix KMAT_MIGR151 - No class found in table KLAH for generic article &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: KMAT_MIGR - Message Class for Migration of Variants to IBase

• Message number: 151

• Message text: No class found in table KLAH for generic article &1.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KMAT_MIGR151 - No class found in table KLAH for generic article &1. ?

  The SAP error message KMAT_MIGR151 indicates that there is a problem related to the configuration of a configurable material (KMAT) in the SAP system. Specifically, the error states that no class was found in the table KLAH for the generic article (material) specified by &1. This typically occurs during the migration or processing of configurable materials.
  Cause:
  
  Missing Class Assignment: The error usually arises when the configurable material does not have a class assigned in the classification system. The class is necessary for the system to understand the characteristics and dependencies of the configurable material.
  Incorrect Configuration: There may be an issue with the configuration of the material, such as missing or incorrect entries in the classification tables.
  Data Migration Issues: If you are migrating data from another system or from an older version of SAP, there may be inconsistencies or missing data in the migration process.
  
  Solution:
  
  
  Check Class Assignment:
  
  Go to the material master record of the configurable material in question.
  Navigate to the classification view and check if a class is assigned. If not, you need to assign the appropriate class that corresponds to the configurable material.
  
  
  
  Create or Assign a Class:
  
  If the class does not exist, you may need to create a new class in the classification system (transaction code CL02 for class maintenance).
  Ensure that the class has the necessary characteristics defined.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the material. Ensure that all required characteristics and dependencies are correctly defined.
  Use transaction code CU50 to check the configuration profile and ensure it is correctly set up.
  
  
  
  Data Migration Review:
  
  If this error occurred during a data migration process, review the migration logs for any errors or warnings that may indicate issues with the data being migrated.
  Ensure that all necessary data related to classes and characteristics has been migrated correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to configurable materials and class assignments for additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM02: Change Material Master
  CL02: Change Class
  CU50: Configuration Profile
  
  
  Tables:
  
  KLAH: Class Assignment Table
  KSSK: Class Characteristics Assignment Table
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.