How To Fix RSRTS_CDS111 - Derivation of filter for &1 must not use itself

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 111

• Message text: Derivation of filter for &1 must not use itself

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS111 - Derivation of filter for &1 must not use itself ?

  The SAP error message RSRTS_CDS111 indicates that there is a problem with the derivation of a filter in a Core Data Services (CDS) view or a query. Specifically, the error message states that the filter for a certain field (represented by &1) must not reference itself, which creates a circular dependency.
  Cause:
  This error typically occurs when:
  
  A filter condition in a CDS view or query is defined in such a way that it references the same field that it is trying to filter. This creates a logical inconsistency because the system cannot evaluate the filter condition without first knowing the value of the field.
  The filter logic is incorrectly set up, leading to a self-referential condition.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Filter Logic: Check the filter conditions defined in your CDS view or query. Ensure that no filter condition is referencing the same field that it is supposed to filter. 
  
  
  Modify the Filter: If you find a self-referential filter, modify it to reference a different field or adjust the logic so that it does not create a circular dependency.
  
  
  Use Variables or Parameters: If you need to filter based on dynamic values, consider using variables or parameters that do not directly reference the field itself.
  
  
  Test the Changes: After making the necessary adjustments, test the CDS view or query to ensure that the error is resolved and that the expected results are returned.
  
  
  Check Documentation: If you are unsure about how to set up the filters correctly, refer to the SAP documentation or community forums for guidance on best practices for defining filters in CDS views.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how to create and manage CDS views is essential for effective data modeling.
  SAP BW Queries: If you are working with SAP BW queries, ensure that the query definitions do not have circular references in their filter conditions.
  SAP Notes: Check for any relevant SAP Notes that might address similar issues or provide additional guidance on handling filter conditions in CDS views.
  
  By following these steps, you should be able to resolve the RSRTS_CDS111 error and ensure that your CDS views or queries function correctly.