How To Fix RSRTS_CDS209 - Parameter &1 value help: unknown alias &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 209

• Message text: Parameter &1 value help: unknown alias &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS209 - Parameter &1 value help: unknown alias &2 ?

  The SAP error message RSRTS_CDS209 with the description "Parameter &1 value help: unknown alias &2" typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when working with Composite Data Sources (CDS) views or queries. This error indicates that there is an issue with the parameter value being passed to a query or a data source, specifically that the alias being referenced is not recognized.
  Cause:
  
  Incorrect Alias: The alias specified in the query or data source does not exist or is misspelled.
  Parameter Mismatch: The parameter being used in the query does not match the expected parameters defined in the CDS view or data source.
  Changes in Data Model: If there have been recent changes to the underlying data model (like renaming fields or changing data sources), the alias may no longer be valid.
  Transport Issues: If the query or data source was transported from one system to another, the alias may not have been included or may not exist in the target system.
  
  Solution:
  
  Check Alias: Verify that the alias specified in the query or data source is correct. Ensure that it matches the alias defined in the CDS view or data source.
  Review Parameters: Check the parameters being passed to the query. Make sure they align with the expected parameters in the CDS view.
  Update Query: If there have been changes to the data model, update the query to reflect those changes. This may involve modifying the query to use the correct aliases or parameters.
  Transport Validation: If the issue arose after a transport, ensure that all necessary objects were transported correctly and that the target system has the same structure as the source system.
  Debugging: If you have access to debugging tools, you can trace the execution of the query to identify where the alias is being referenced and why it is not recognized.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the documentation for the specific CDS view or data source you are working with to understand the expected parameters and aliases.
  Community Forums: Consider searching or posting on SAP Community forums or other SAP-related discussion boards for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify and resolve the cause of the RSRTS_CDS209 error in your SAP environment.