How To Fix RSRTS_CDS242 - Characteristic &1 must not be used in both structures (alias &2 and &3)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 242

• Message text: Characteristic &1 must not be used in both structures (alias &2 and &3)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS242 - Characteristic &1 must not be used in both structures (alias &2 and &3) ?

  The SAP error message RSRTS_CDS242 indicates that a characteristic is being used in two different structures (aliases) within a Composite Data Source (CDS) view or a similar context, which is not allowed. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when working with data models.
  Cause:
  The error arises when:
  
  A characteristic (e.g., a field or dimension) is included in two different structures (aliases) within the same CDS view or data model.
  This can happen if the same characteristic is defined in multiple places, leading to ambiguity in how the data should be processed or displayed.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Structures: Determine which two structures (aliases) are causing the conflict. The error message will provide the names of the aliases (e.g., &2 and &3).
  
  
  Review the Data Model: Check the definitions of the two structures to see where the characteristic (&1) is being used. 
  
  
  Remove Duplicate Usage: 
  
  Decide which structure should retain the characteristic. 
  Remove the characteristic from one of the structures to ensure it is only defined in one place.
  
  
  
  Adjust Queries or Reports: If you have queries or reports that rely on the removed characteristic, you may need to adjust them accordingly.
  
  
  Test the Changes: After making the adjustments, test the data model or query to ensure that the error is resolved and that the data is being retrieved correctly.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or updates related to this error message. SAP frequently updates its documentation and may have specific recommendations for your version.
  Documentation: Review the SAP BW or HANA documentation regarding Composite Data Sources and data modeling best practices to avoid similar issues in the future.
  Community Forums: Consider searching or posting in SAP community forums or SAP Community Network (SCN) for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the RSRTS_CDS242 error and ensure that your data model is correctly configured.