How To Fix RSRTS_CDS020 - Expression could not be converted into parameter value

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 020

• Message text: Expression could not be converted into parameter value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS020 - Expression could not be converted into parameter value ?

  The SAP error message RSRTS_CDS020: Expression could not be converted into parameter value typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there is an issue with the way a query is being executed, particularly when using CDS (Core Data Services) views or when parameters are being passed to a query.
  Causes:
  
  
  Data Type Mismatch: The most common cause of this error is a mismatch between the expected data type of a parameter and the actual data type being passed. For example, if a parameter expects a string but receives a numeric value, this error may occur.
  
  
  Invalid Parameter Value: If the value being passed to a parameter is not valid or does not exist in the context of the query, it can lead to this error.
  
  
  Incorrect Query Design: The query might be incorrectly designed, leading to issues in how parameters are being interpreted or utilized.
  
  
  CDS View Issues: If the CDS view itself has issues, such as incorrect definitions or relationships, it can lead to this error when trying to execute a query based on that view.
  
  
  Version Compatibility: Sometimes, compatibility issues between different versions of SAP BW or HANA can lead to unexpected behavior.
  
  
  Solutions:
  
  
  Check Parameter Types: Review the parameters being passed to the query and ensure that they match the expected data types. Make sure that the values being passed are valid and exist in the data source.
  
  
  Validate Query Design: Go through the query design to ensure that all parameters are correctly defined and that there are no logical errors in how they are being used.
  
  
  Review CDS View: If the query is based on a CDS view, check the view definition for any issues. Ensure that all fields and relationships are correctly defined.
  
  
  Test with Different Values: Try executing the query with different parameter values to see if the error persists. This can help identify if the issue is with specific values.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can resolve compatibility issues.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for any known issues related to this error message, as there may be specific fixes or workarounds available.
  
  
  Debugging: If you have access to debugging tools, consider using them to trace the execution of the query and identify where the conversion is failing.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to the error message RSRTS_CDS020. SAP Notes often contain fixes or workarounds for known issues.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Documentation: Review the official SAP documentation for BW and HANA, particularly sections related to query design and CDS views.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.