How To Fix RS_HCPR_MODEL054 - Field name '&1' is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_HCPR_MODEL - Messages related to the HANA Composite Provider Backend

• Message number: 054

• Message text: Field name '&1' is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_HCPR_MODEL054 - Field name '&1' is not unique ?

  The SAP error message RS_HCPR_MODEL054, which states "Field name '&1' is not unique," typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there is an issue with the uniqueness of field names in a data model or query. This error indicates that the system has encountered multiple fields with the same name, which can lead to ambiguity in data processing.
  Cause:
  
  Duplicate Field Names: The most common cause of this error is that there are multiple fields with the same name in the data model, InfoProvider, or query definition. This can happen if fields are derived from different sources or if there are naming conflicts in the data model.
  Incorrect Data Model Configuration: If the data model is not configured correctly, it may lead to situations where field names are not unique.
  Changes in Data Sources: If there have been recent changes to the underlying data sources or transformations, it may result in duplicate field names being introduced.
  
  Solution:
  
  Identify Duplicate Fields: Review the data model or query definition to identify where the duplicate field names are coming from. You can do this by checking the field list in the query or the data model.
  Rename Fields: If possible, rename the fields to ensure that each field has a unique name. This can be done in the data model or query definition.
  Adjust Data Model: If the duplicates are due to the way the data model is structured, consider restructuring the model to eliminate the duplicates. This may involve changing the way data is sourced or transformed.
  Check InfoObjects: If the error is related to InfoObjects, ensure that the InfoObjects have unique names and that there are no conflicts in the data model.
  Rebuild the Query: In some cases, it may be necessary to rebuild the query from scratch to ensure that there are no lingering issues with field names.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error. SAP frequently updates its documentation and may have specific recommendations for your version.
  Documentation: Review the SAP BW or HANA documentation for best practices on naming conventions and data modeling to avoid such issues in the future.
  Testing: After making changes, test the data model or query thoroughly to ensure that the error is resolved and that the data is being processed correctly.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.