How To Fix IUUC_CLOG_CORE149 - Table Structure Modification

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_CLOG_CORE - SLT Change Log Messages

• Message number: 149

• Message text: Table Structure Modification

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_CLOG_CORE149 - Table Structure Modification ?

  The SAP error message IUUC_CLOG_CORE149 typically relates to issues encountered during the modification of table structures in the context of SAP Landscape Transformation (SLT) or Data Replication. This error can occur when there are inconsistencies or issues with the change log tables that are used for data replication.
  Cause:
  
  Table Structure Changes: The error often arises when there are changes made to the structure of a table that is being replicated, such as adding or removing columns, changing data types, etc.
  Inconsistent Change Log: If the change log table (which tracks changes to the source table) is not in sync with the actual structure of the source table, it can lead to this error.
  Replication Configuration Issues: Misconfigurations in the SLT setup or replication settings can also trigger this error.
  Data Type Mismatches: If there are data type mismatches between the source and target systems, it can lead to replication issues.
  
  Solution:
  
  Check Table Structure: Verify the structure of the source table and ensure that it matches the expected structure in the SLT configuration. If there have been recent changes, you may need to adjust the SLT configuration accordingly.
  Reinitialize the Replication: If the change log is inconsistent, you may need to reinitialize the replication for the affected table. This can be done by stopping the replication, dropping the change log, and then reconfiguring the replication.
  Adjust SLT Configuration: Review the SLT configuration settings to ensure they are correctly set up for the current table structure. This may involve adjusting the mapping or settings in the SLT configuration.
  Check for Data Type Issues: Ensure that the data types in the source and target systems are compatible. If there are discrepancies, you may need to adjust the data types in the target system.
  Consult SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional guidance or fixes related to this error.
  
  Related Information:
  
  SAP Notes: Look for specific SAP Notes related to IUUC_CLOG_CORE149 for any patches or updates that may address the issue.
  SLT Documentation: Review the official SAP documentation for Landscape Transformation for best practices and troubleshooting steps.
  Change Log Management: Familiarize yourself with how change logs are managed in SLT, including how to monitor and maintain them.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.