How To Fix RSANA_UMM_API321 - Duplicate input field name. Please try again with unique names.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSANA_UMM_API - UMM API Messages

• Message number: 321

• Message text: Duplicate input field name. Please try again with unique names.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSANA_UMM_API321 - Duplicate input field name. Please try again with unique names. ?

  The SAP error message RSANA_UMM_API321: Duplicate input field name. Please try again with unique names typically occurs in the context of using the SAP BW (Business Warehouse) or SAP HANA environments, particularly when dealing with data modeling or data extraction processes. This error indicates that there are multiple fields in your input that have the same name, which is not allowed.
  Cause:
  
  Duplicate Field Names: The most common cause of this error is that the input structure (like a data source, transformation, or query) contains fields with the same name. This can happen if you are trying to load data from multiple sources that have overlapping field names without proper aliasing.
  Incorrect Mapping: If you are mapping fields in a transformation or data flow, and you accidentally map two different source fields to the same target field name, this error can occur.
  Modeling Issues: In data modeling, if you have created multiple fields with the same name in a composite provider or calculation view, it can lead to this error.
  
  Solution:
  
  Check Field Names: Review the input structure and ensure that all field names are unique. If you find duplicates, rename them to ensure uniqueness.
  Use Aliases: If you are pulling data from multiple sources that have overlapping field names, consider using aliases to differentiate them.
  Review Transformations: If you are using transformations, check the mapping to ensure that no two source fields are mapped to the same target field name.
  Data Model Review: In your data model, ensure that all fields are uniquely named. If necessary, modify the model to avoid duplicates.
  Testing: After making changes, test the data flow or extraction process again to ensure that the error is resolved.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error. Sometimes, there may be known issues or fixes provided by SAP.
  Documentation: Refer to the SAP BW or HANA documentation for best practices on data modeling and field naming conventions.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the RSANA_UMM_API321 error and ensure that your data processing tasks run smoothly.