How To Fix NSDM_MM_MIG091 - PERFY entries already exist and will be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: NSDM_MM_MIG - MM-IM: Messages for Migration

• Message number: 091

• Message text: PERFY entries already exist and will be deleted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message NSDM_MM_MIG091 - PERFY entries already exist and will be deleted ?

  The SAP error message NSDM_MM_MIG091 indicates that there are existing entries in the system that are conflicting with the migration process you are attempting to execute. Specifically, it suggests that the entries related to the PERFY (Performance) data already exist in the system and will be deleted as part of the migration process.
  Cause:
  
  Existing Data: The error typically arises when the migration process encounters data that has already been migrated or exists in the target system. This can happen if the migration is being run multiple times or if there are pre-existing records that were not cleared before the migration.
  Data Integrity Issues: There may be issues with data integrity or consistency, leading to conflicts during the migration process.
  Configuration Issues: Incorrect configuration settings in the migration tool or process can also lead to this error.
  
  Solution:
  
  Check Existing Entries: Before running the migration, check the target system for existing PERFY entries. You can do this by querying the relevant tables or using transaction codes that allow you to view performance-related data.
  Delete or Archive Existing Data: If the existing entries are not needed, you can delete them or archive them as per your organization's data management policies. Ensure that you have backups if necessary.
  Run Migration Again: After ensuring that there are no conflicting entries, you can rerun the migration process.
  Review Migration Logs: Check the migration logs for any additional details or warnings that might provide more context about the error.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using. There may be specific steps or prerequisites that need to be followed.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They can provide more tailored guidance based on your specific system configuration and migration scenario.
  
  Related Information:
  
  Migration Tools: Familiarize yourself with the specific migration tools and processes you are using (e.g., SAP S/4HANA Migration Cockpit, Data Migration Workbench).
  Data Model: Understand the data model and relationships of the entities involved in the migration to avoid conflicts.
  Testing: Always perform migrations in a test environment before executing them in production to identify potential issues early.
  Documentation: Keep documentation of the migration process, including any errors encountered and how they were resolved, for future reference.
  
  By following these steps, you should be able to resolve the NSDM_MM_MIG091 error and successfully complete your migration process.