How To Fix RSAOLTP434 - Field name &2 for DataSource &1 is duplicated

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAOLTP - Notifications in OLTP Source Environment

• Message number: 434

• Message text: Field name &2 for DataSource &1 is duplicated

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAOLTP434 - Field name &2 for DataSource &1 is duplicated ?

  The SAP error message RSAOLTP434 indicates that there is a duplication of field names in the DataSource you are working with. This typically occurs when you are trying to create or modify a DataSource in SAP BW (Business Warehouse) and there are multiple fields with the same name defined in the structure of the DataSource.
  Cause:
  
  Duplicate Field Names: The most common cause of this error is that the DataSource definition includes multiple fields with the same name. This can happen if you are using a custom DataSource or if there are changes made to the underlying structure of the source system.
  Incorrect Mapping: If you are mapping fields from the source system to the DataSource and accidentally map the same field multiple times, this can lead to duplication.
  Changes in Source System: If the source system has been modified (e.g., new fields added or existing fields renamed), it may lead to conflicts in the DataSource definition.
  
  Solution:
  
  Check DataSource Definition: Go to the DataSource definition in the SAP BW system and check the field names. Ensure that all field names are unique.
  Modify Field Names: If you find duplicate field names, you will need to rename them to ensure uniqueness. This can be done in the DataSource definition.
  Review Field Mapping: If you are using a transformation or a data flow that maps fields from the source to the DataSource, review the mapping to ensure that no field is mapped more than once.
  Recreate DataSource: If the issue persists and you are unable to resolve it, consider recreating the DataSource from scratch, ensuring that you define unique field names from the beginning.
  Check for Updates: If you are working with a standard DataSource, check if there are any updates or notes from SAP regarding this issue, as it may be a known problem with a specific solution.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to access the DataSource and check its definition.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional guidance.
  Documentation: Review SAP documentation on DataSource creation and management to ensure compliance with best practices.
  
  By following these steps, you should be able to resolve the RSAOLTP434 error and successfully manage your DataSource in SAP BW.