How To Fix RSRTS_CDS189 - Derivation for default node is ignored: No hierarchy selection

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 189

• Message text: Derivation for default node is ignored: No hierarchy selection

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS189 - Derivation for default node is ignored: No hierarchy selection ?

  The SAP error message RSRTS_CDS189 indicates that there is an issue with the hierarchy selection in a query that uses a Composite Data Source (CDS) view. This error typically occurs when the system is unable to derive a default node for a hierarchy because no hierarchy selection has been made.
  Cause:
  
  Missing Hierarchy Selection: The most common cause of this error is that the query does not have a hierarchy selection defined. This means that the system cannot determine which node of the hierarchy to use as the default.
  Incorrect Hierarchy Configuration: The hierarchy may not be properly configured in the underlying data model, leading to issues when the query attempts to access it.
  Data Model Changes: If there have been recent changes to the data model or hierarchy structure, it may lead to inconsistencies that result in this error.
  Query Design Issues: The query might be designed in a way that does not properly reference the hierarchy or its nodes.
  
  Solution:
  
  
  Check Hierarchy Selection: Ensure that the query has a valid hierarchy selection. You can do this by:
  
  Opening the query in the Query Designer.
  Verifying that the hierarchy is correctly selected in the query properties.
  
  
  
  Review Hierarchy Configuration: Check the configuration of the hierarchy in the underlying data model. Ensure that:
  
  The hierarchy is active and properly defined.
  All necessary nodes are available and correctly linked.
  
  
  
  Update Query: If the hierarchy has changed, you may need to update the query to reflect these changes. This could involve:
  
  Modifying the query to include the correct hierarchy nodes.
  Refreshing the query to ensure it picks up the latest data model changes.
  
  
  
  Test with Different Selections: Try running the query with different selections or filters to see if the error persists. This can help identify if the issue is specific to certain selections.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on working with hierarchies in CDS views and queries.
  
  
  Check for Notes and Patches: Sometimes, SAP releases notes or patches that address specific issues. Check the SAP Support Portal for any relevant notes related to this error.
  
  
  Related Information:
  
  SAP BW/4HANA: This error is often encountered in SAP BW/4HANA environments where CDS views are commonly used for reporting.
  Query Designer: Familiarity with the Query Designer tool is essential for troubleshooting and modifying queries.
  SAP Community: Engaging with the SAP Community can provide insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.