How To Fix NSDM_MIG_CONTROL165 - Aggr. &1, predecessor aggregate: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: NSDM_MIG_CONTROL - Log message for migration

• Message number: 165

• Message text: Aggr. &1, predecessor aggregate: &2

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message NSDM_MIG_CONTROL165 - Aggr. &1, predecessor aggregate: &2 ?

  The SAP error message NSDM_MIG_CONTROL165 typically relates to issues encountered during the migration of data in the SAP system, particularly when dealing with aggregates in the context of SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  The error message indicates that there is a problem with the aggregation process. Specifically, it suggests that there is an issue with the predecessor aggregate of the specified aggregate. This can occur due to several reasons, including:
  
  Missing Predecessor Aggregate: The predecessor aggregate that is required for the current aggregate may not exist or may not be properly defined.
  Inconsistent Data: There may be inconsistencies in the data that prevent the aggregation from being processed correctly.
  Configuration Issues: There could be configuration issues in the data model or in the settings of the aggregates.
  Data Migration Issues: If you are migrating data, there may be issues with the migration process itself that are causing the aggregates to be misaligned.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Predecessor Aggregate: Verify that the predecessor aggregate specified in the error message exists and is correctly configured. Ensure that it is active and that there are no issues with its data.
  
  
  Review Data Consistency: Check the data in the aggregates for any inconsistencies. You may need to run consistency checks or data validation processes to identify and correct any issues.
  
  
  Rebuild Aggregates: If the predecessor aggregate is missing or corrupted, you may need to rebuild it. This can often be done through the SAP BW administration tools.
  
  
  Check Configuration: Review the configuration settings for the aggregates in the data model. Ensure that all necessary settings are correctly defined and that there are no missing links between aggregates.
  
  
  Consult SAP Notes: Look for any relevant SAP Notes or documentation that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and the details of the error.
  
  
  Related Information:
  
  SAP BW Documentation: Review the official SAP BW documentation for information on aggregates and data migration processes.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) for managing aggregates and monitoring data loads.
  
  By following these steps, you should be able to diagnose and resolve the NSDM_MIG_CONTROL165 error effectively.