How To Fix SADL_GW031 - Filter by element '&1' is not implemented

SADL_GW031 - Overview

• Message type: E = Error

• Message class: SADL_GW -

• Message number: 031

• Message text: Filter by element '&1' is not implemented

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW031 - Filter by element '&1' is not implemented ?

  The SAP error message SADL_GW031 indicates that there is an issue with a filter element in a Service Data Layer (SDL) query. Specifically, it means that the filter by the specified element (&1) is not implemented in the context of the query you are trying to execute. This can occur in various scenarios, such as when using OData services or when working with CDS views.
  Causes
  
  Unsupported Filter Element: The filter element you are trying to use in your query is not supported or implemented in the underlying data model or service.
  Incorrect Query Structure: The query may be incorrectly structured, leading to the system not recognizing the filter element.
  Missing Annotations: The necessary annotations for the filter element may not be defined in the CDS view or the OData service.
  Version Mismatch: There may be a version mismatch between the service and the client application, leading to unsupported features.
  
  Solutions
  
  Check Filter Element: Verify that the