How To Fix NSDM_MIG_CONTROL156 - Grouping for MKPF-Insert not possible, was already triggered

SAP Error Message - Details

• Message type: E = Error

• Message class: NSDM_MIG_CONTROL - Log message for migration

• Message number: 156

• Message text: Grouping for MKPF-Insert not possible, was already triggered

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message NSDM_MIG_CONTROL156 - Grouping for MKPF-Insert not possible, was already triggered ?

  The SAP error message NSDM_MIG_CONTROL156 indicates that there is an issue with the grouping for the MKPF (Document Header for Material Document) insert operation during a migration process. This error typically arises in the context of data migration, particularly when using tools like SAP S/4HANA Migration Cockpit or similar data migration tools.
  Cause:
  The error message suggests that the system has already triggered a grouping for the MKPF insert operation, which means that the system is trying to perform an operation that has already been initiated or is in a state that does not allow for another grouping to be created. This can happen due to:
  
  Duplicate Entries: The migration process may be attempting to insert duplicate entries into the MKPF table.
  Concurrency Issues: Multiple processes may be trying to insert data into the MKPF table simultaneously, leading to conflicts.
  Configuration Issues: There may be issues with the configuration of the migration settings or the data being migrated.
  Data Integrity Issues: The data being migrated may not meet the necessary integrity constraints, causing the grouping to fail.
  
  Solution:
  To resolve the NSDM_MIG_CONTROL156 error, you can take the following steps:
  
  
  Check for Duplicates: Review the data being migrated to ensure there are no duplicate entries that could be causing the conflict. Remove or consolidate duplicates as necessary.
  
  
  Review Migration Logs: Check the migration logs for more detailed error messages or warnings that can provide insight into what might be causing the issue.
  
  
  Adjust Migration Settings: If you are using a migration tool, review the settings and configurations to ensure they are set up correctly for the data you are migrating.
  
  
  Data Validation: Validate the data being migrated to ensure it meets all necessary requirements and constraints for the MKPF table.
  
  
  Retry Migration: After addressing any identified issues, retry the migration process. Ensure that no other processes are attempting to insert data into the MKPF table at the same time.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for any additional troubleshooting steps or known issues.
  
  
  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 situation.
  
  
  Related Information:
  
  MKPF Table: This table contains the header data for material documents in SAP. Understanding its structure and constraints can help in troubleshooting migration issues.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools and templates for data migration.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on best practices for data migration.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the NSDM_MIG_CONTROL156 error.