How To Fix CNV_IUUC_REPL_ADV_SE150 - Field positions changed. &1 will become key field

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPL_ADV_SE - MEssage class for package CNV_IUUC_REPL_ADV_SETTINGS

• Message number: 150

• Message text: Field positions changed. &1 will become key field

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPL_ADV_SE150 - Field positions changed. &1 will become key field ?

  The SAP error message CNV_IUUC_REPL_ADV_SE150 indicates that there is an issue with the field positions in a data replication scenario, specifically in the context of the SAP Landscape Transformation (SLT) replication process. This error typically arises when the structure of the source table has changed, leading to a situation where the field positions do not match the expected configuration in the target system.
  Cause:
  
  
  Field Position Changes: The most common cause of this error is that the field positions in the source table have changed. This can happen due to:
  
  Changes in the database schema (e.g., adding, removing, or reordering fields).
  Changes made to the underlying data model in the source system.
  Updates or modifications to the source table that were not reflected in the SLT configuration.
  
  
  
  Key Field Changes: The error message indicates that a field that was not previously a key field is now being treated as a key field due to the changes in the field positions.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Source Table Structure: Verify the current structure of the source table in the source system. Look for any changes in the field definitions, positions, or data types.
  
  
  Update SLT Configuration:
  
  If there have been changes to the source table, you may need to update the SLT configuration to reflect these changes.
  You can do this by reinitializing the replication setup for the affected table. This may involve stopping the replication, adjusting the configuration, and then restarting the replication process.
  
  
  
  Adjust Key Fields: If the error indicates that a field is now being treated as a key field, ensure that the key field settings in the SLT configuration are correct. You may need to adjust the key field settings to align with the new structure of the source table.
  
  
  Re-activate Replication: After making the necessary adjustments, re-activate the replication for the affected table. This may involve performing a full load of the data again.
  
  
  Monitor Replication: After making changes, monitor the replication process to ensure that the error does not reoccur and that data is being replicated correctly.
  
  
  Related Information:
  
  SLT Documentation: Refer to the official SAP documentation for SLT for detailed guidance on managing replication configurations and handling errors.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTRC (SLT Configuration) and LTRS (SLT Replication Monitor) to manage and monitor your SLT setup effectively.
  
  By following these steps, you should be able to resolve the CNV_IUUC_REPL_ADV_SE150 error and ensure that your data replication process functions smoothly.