How To Fix KMAT_MIGR157 - No relation for varian &1 to gen. article class in table KSSK

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 157

• Message text: No relation for varian &1 to gen. article class in table KSSK

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KMAT_MIGR157 - No relation for varian &1 to gen. article class in table KSSK ?

  The SAP error message KMAT_MIGR157 indicates that there is an issue with the configuration of a variant in relation to a general article class in the KSSK table. This error typically arises during the migration or processing of configurable materials (KMAT) in SAP, particularly when dealing with variant configuration.
  Cause:
  The error occurs when the system cannot find a valid relationship between the variant (the specific configuration of a product) and the general article class in the KSSK table. This can happen due to several reasons:
  
  Missing Entries: The variant may not have been properly defined in the system, or there may be missing entries in the KSSK table that link the variant to the general article class.
  Incorrect Configuration: The configuration settings for the variant may not align with the expected settings for the general article class.
  Data Migration Issues: If data was migrated from another system or from a previous version of SAP, there may have been issues during the migration process that resulted in incomplete or incorrect data.
  Custom Development: If there are custom developments or enhancements in the system, they may interfere with the standard behavior of variant configuration.
  
  Solution:
  To resolve the KMAT_MIGR157 error, you can take the following steps:
  
  
  Check KSSK Table: Verify the entries in the KSSK table to ensure that the variant is correctly linked to the general article class. You can use transaction SE16 or SE11 to view the table entries.
  
  
  Review Configuration: Ensure that the configuration for the variant is set up correctly. Check the configuration profiles and ensure that all necessary characteristics and values are defined.
  
  
  Data Consistency Check: Run a consistency check for the variant configuration. You can use transaction CU50 to check the configuration and ensure that all dependencies are correctly defined.
  
  
  Recreate the Variant: If the variant is not correctly defined, consider recreating it. This may involve deleting the existing variant and creating a new one with the correct settings.
  
  
  Check Migration Logs: If the error occurred during a migration process, review the migration logs for any errors or warnings that may provide additional context on what went wrong.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to variant configuration and the specific error message for additional troubleshooting steps.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance. They may have additional insights or patches available for your specific version of SAP.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CU50 (Configuration Simulation), SE16 (Data Browser), and SE11 (Data Dictionary).
  SAP Notes: Search for SAP Notes related to KMAT_MIGR157 for any specific fixes or recommendations provided by SAP.
  Variant Configuration: Understanding the principles of variant configuration in SAP can help in troubleshooting similar issues in the future.
  
  By following these steps, you should be able to identify and resolve the cause of the KMAT_MIGR157 error in your SAP system.