How To Fix NSDM_MM_MIG048 - Difference: New MSEG - Old MSEG

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 048

• Message text: Difference: New MSEG - Old MSEG

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_MIG048 - Difference: New MSEG - Old MSEG ?

  The SAP error message NSDM_MM_MIG048 indicates a discrepancy between the new MSEG (Material Document) and the old MSEG during a migration process. This error typically arises during data migration activities, particularly when using tools like the SAP Migration Cockpit or during system upgrades.
  Cause:
  The error occurs due to differences in the data between the old and new MSEG tables. This can happen for several reasons, including:
  
  Data Inconsistencies: There may be inconsistencies in the material document data between the legacy system and the new system.
  Missing or Incorrect Data: Some records may be missing or incorrectly mapped during the migration process.
  Changes in Data Structure: Changes in the data structure or business logic between the old and new systems can lead to discrepancies.
  Customizations: Custom fields or modifications in the old system that are not accounted for in the new system.
  
  Solution:
  To resolve the NSDM_MM_MIG048 error, you can follow these steps:
  
  
  Analyze the Error Message: Review the detailed error message to identify the specific records causing the issue. This may involve checking logs or using transaction codes like SLG1 (Application Log) to get more details.
  
  
  Data Comparison: Compare the old MSEG data with the new MSEG data to identify discrepancies. This may involve running SQL queries or using data comparison tools.
  
  
  Correct Data Mapping: Ensure that the data mapping during the migration process is correct. If there are custom fields or changes in the data structure, make sure they are properly handled in the migration.
  
  
  Data Cleansing: Cleanse the data in the legacy system to ensure that it is consistent and complete before migration. This may involve correcting or removing invalid records.
  
  
  Re-run Migration: After addressing the discrepancies, re-run the migration process to see if the error persists.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the migration process for any specific guidelines or known issues related to this error.
  
  
  Engage SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance. They may provide insights or patches related to the migration process.
  
  
  Related Information:
  
  Migration Cockpit: Familiarize yourself with the SAP Migration Cockpit and its functionalities, as it is often used for data migration tasks.
  SAP Notes: Check for relevant SAP Notes that may address this specific error or provide guidance on migration issues.
  Data Migration Best Practices: Review best practices for data migration in SAP to minimize the risk of errors during the process.
  
  By following these steps, you should be able to identify and resolve the NSDM_MM_MIG048 error effectively.