How To Fix /IWBEP/CM_V4S_RUN034 - Function '&1' for literal '&2' is only for strings allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4S_RUN -

• Message number: 034

• Message text: Function '&1' for literal '&2' is only for strings allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4S_RUN034 - Function '&1' for literal '&2' is only for strings allowed ?

  The SAP error message /IWBEP/CM_V4S_RUN034 indicates that there is an issue with the function being called in the context of an OData service, specifically related to the handling of literals. The message states that the function &1 for the literal &2 is only allowed for strings. This typically occurs when a non-string data type is being passed to a function that expects a string.
  Cause:
  
  Data Type Mismatch: The function being called is expecting a string literal, but a different data type (like an integer, boolean, etc.) is being passed instead.
  Incorrect OData Query: The OData query might be incorrectly formed, leading to the wrong data type being sent to the backend.
  Model Definition Issues: The data model might not be correctly defined, leading to mismatches between expected and actual data types.
  
  Solution:
  
  
  Check the OData Query: Review the OData query being sent to ensure that all parameters and literals are correctly formatted as strings. If a numeric or boolean value is being passed, convert it to a string.
  
  
  Review Function Implementation: Look at the implementation of the function &1 to ensure that it is designed to handle the expected input types. If it is meant to handle strings, ensure that the input is being validated and converted as necessary.
  
  
  Adjust Data Model: If the issue is related to the data model, ensure that the data types defined in the model match the expected types in the function. This may involve modifying the metadata or the service definition.
  
  
  Debugging: Use debugging tools in SAP to trace the execution of the OData service and identify where the data type mismatch is occurring. This can help pinpoint the exact location in the code where the error is triggered.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific OData service and the function being called to understand the expected input types and any constraints.
  
  
  Related Information:
  
  SAP OData Services: Understanding how OData services work in SAP can help in troubleshooting issues related to data types and function calls.
  Data Type Conversions: Familiarize yourself with how to convert data types in ABAP or the relevant programming language used in your SAP environment.
  SAP Community and Forums: Engaging with the SAP community can provide insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and ensure that the correct data types are being used in your OData service calls.