How To Fix IUUC_MAIN124 - Error occured during field to field comparison of Table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_MAIN - IUUC: Main Message class

• Message number: 124

• Message text: Error occured during field to field comparison of Table &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_MAIN124 - Error occured during field to field comparison of Table &1 ?

  The SAP error message IUUC_MAIN124 indicates that there was an issue during the field-to-field comparison of a specific table (denoted as &1) in the context of the SAP Landscape Transformation (SLT) replication process. This error typically arises during the data replication process when the system is trying to compare fields between the source and target tables.
  Cause:
  
  Data Type Mismatch: The fields in the source and target tables may have different data types or lengths, leading to comparison issues.
  Null Values: The presence of null values in one of the fields being compared can cause the comparison to fail.
  Inconsistent Data: If the data in the source and target tables is inconsistent or corrupted, it can lead to errors during comparison.
  Configuration Issues: Incorrect configuration settings in the SLT setup can also lead to this error.
  Table Structure Changes: If there have been changes to the structure of the source or target tables (like adding or removing fields), it can cause discrepancies during comparison.
  
  Solution:
  
  Check Data Types: Ensure that the data types and lengths of the fields in the source and target tables match. You can do this by comparing the table definitions in both systems.
  Handle Null Values: Investigate the fields being compared for null values and handle them appropriately. You may need to adjust your data or the replication settings to manage nulls.
  Data Consistency Check: Perform a consistency check on the data in both the source and target tables. You may need to correct any discrepancies found.
  Review SLT Configuration: Check the SLT configuration settings to ensure that they are correctly set up for the tables being replicated. This includes checking the replication settings and any transformation rules.
  Monitor Logs: Review the SLT logs for more detailed error messages that can provide additional context on what went wrong during the comparison.
  Reinitialize Replication: If the issue persists, consider reinitializing the replication for the affected table. This can help to reset the state and resolve any underlying issues.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SLT_MONITOR to monitor the replication process and view detailed logs.
  SAP Notes: Check for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for SLT for best practices and guidelines on setting up and managing data replication.
  
  If the problem continues after trying the above solutions, it may be beneficial to engage SAP support for further assistance.