How To Fix NSDM_MM_MIG046 - Difference: Migrated - Existing

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 046

• Message text: Difference: Migrated - Existing

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message NSDM_MM_MIG046 - Difference: Migrated - Existing ?

  The SAP error message NSDM_MM_MIG046 with the description "Difference: Migrated - Existing" typically occurs during the migration process of materials in the SAP system, particularly when using the Migration Cockpit or similar tools for data migration. This error indicates that there is a discrepancy between the data that has been migrated and the existing data in the system.
  Cause:
  The error can be caused by several factors, including:
  
  
  Data Inconsistency: The migrated data does not match the existing data in the system. This could be due to differences in material master records, such as attributes, quantities, or other relevant fields.
  
  
  Duplicate Entries: There may be duplicate entries in the migrated data that conflict with existing records in the SAP system.
  
  
  Incorrect Mapping: The mapping of fields during the migration process may not have been set up correctly, leading to mismatches.
  
  
  Data Format Issues: The format of the data being migrated may not align with the expected format in the SAP system, causing discrepancies.
  
  
  Solution:
  To resolve the NSDM_MM_MIG046 error, you can follow these steps:
  
  
  Review Migration Data: Check the data that has been migrated and compare it with the existing data in the SAP system. Look for discrepancies in key fields.
  
  
  Correct Mapping: Ensure that the mapping of fields during the migration process is correct. Adjust the mapping if necessary to align with the existing data structure.
  
  
  Data Cleansing: Cleanse the data before migration to eliminate duplicates and ensure consistency. This may involve removing or merging duplicate records.
  
  
  Use Migration Tools: Utilize SAP's migration tools effectively, such as the Migration Cockpit, to validate data before migration. These tools often provide checks and balances to identify potential issues.
  
  
  Consult Logs: Check the migration logs for detailed error messages that can provide more context on the specific discrepancies.
  
  
  Testing: Conduct thorough testing in a development or sandbox environment before performing the migration in the production environment. This helps identify issues early on.
  
  
  Seek Help: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide guidance based on the specific context of your migration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  Documentation: Review SAP documentation related to the Migration Cockpit and material master data migration for best practices and troubleshooting tips.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the NSDM_MM_MIG046 error and implement a solution to resolve it.