How To Fix /IWBEP/CM_V4_COS025 - Filter node is not a literal

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_COS -

• Message number: 025

• Message text: Filter node is not a literal

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_COS025 - Filter node is not a literal ?

  The SAP error message /IWBEP/CM_V4_COS025 Filter node is not a literal typically occurs in the context of OData services when there is an issue with the way filter expressions are defined in the OData query. This error indicates that the filter node specified in the query is not a literal value, which is required for the filter to be processed correctly.
  Cause:
  
  
  Incorrect Filter Syntax: The filter expression in the OData query may not be using a literal value. For example, if you are trying to filter based on a property, you need to ensure that the value you are comparing against is a literal (e.g., a string, number, or boolean).
  
  
  Data Type Mismatch: The data type of the filter value may not match the data type of the property being filtered. For instance, if you are filtering a numeric field with a string value, this could lead to the error.
  
  
  Invalid OData Query: The OData query might be malformed or not conforming to the OData protocol standards, leading to the inability of the system to interpret the filter correctly.
  
  
  Solution:
  
  
  Check the Filter Expression: Review the OData query and ensure that all filter expressions are using literal values. For example, if you are filtering by a string property, ensure that the value is enclosed in single quotes.
  Example:
  /EntitySet?$filter=PropertyName eq 'LiteralValue'
  
  
  Verify Data Types: Ensure that the data types of the properties and the values you are using in the filter match. If you are filtering a numeric property, make sure you are using a numeric value.
  
  
  Use Correct Syntax: Make sure that the syntax of the OData query is correct. Refer to the OData documentation for the correct usage of filter expressions.
  
  
  Debugging: If you have access to the backend, you can enable logging for the OData service to get more detailed information about the error. This can help you identify the exact part of the query that is causing the issue.
  
  
  Testing with Tools: Use tools like Postman or SAP Gateway Client to test your OData queries. This can help you isolate the issue and ensure that your queries are correctly formatted.
  
  
  Related Information:
  
  
  OData Documentation: Familiarize yourself with the OData protocol and its query options. The official OData documentation provides comprehensive guidelines on how to construct queries, including filters.
  
  
  SAP Gateway: If you are working with SAP Gateway, check the service implementation and ensure that the entity types and properties are correctly defined.
  
  
  SAP Community: Consider searching or posting your issue on the SAP Community forums, where other SAP professionals may have encountered similar issues and can provide insights.
  
  
  By following these steps, you should be able to resolve the /IWBEP/CM_V4_COS025 Filter node is not a literal error and successfully execute your OData queries.