How To Fix RAP_RUNTIME023 - Parameter data type of action &1 of entity &2 not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RAP_RUNTIME - RAP Runtime Messages

• Message number: 023

• Message text: Parameter data type of action &1 of entity &2 not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RAP_RUNTIME023 - Parameter data type of action &1 of entity &2 not supported ?

  The SAP error message RAP_RUNTIME023 indicates that there is an issue with the parameter data type of an action defined in a RAP (Rapid Application Programming) model. Specifically, it means that the data type of a parameter for a specified action in a specified entity is not supported.
  Cause
  This error typically arises due to one of the following reasons:
  
  
  Unsupported Data Type: The action parameter is defined with a data type that is not supported by the RAP framework. For example, certain complex types or unsupported primitive types may lead to this error.
  
  
  Incorrect Action Definition: The action may not be defined correctly in the behavior definition of the entity. This could include issues with the parameter types or the way the action is structured.
  
  
  Incompatibility with RAP Standards: The RAP model has specific requirements and standards for data types and structures. If the action does not adhere to these standards, it can trigger this error.
  
  
  Solution
  To resolve the RAP_RUNTIME023 error, you can take the following steps:
  
  
  Check Parameter Data Types: Review the data types of the parameters defined for the action in the behavior definition. Ensure that they are compatible with the RAP framework. Use supported primitive types (e.g., String, Integer, Decimal, etc.) and avoid complex or unsupported types.
  
  
  Review Action Definition: Ensure that the action is defined correctly in the behavior definition. Check for any typos or misconfigurations in the action's parameters.
  
  
  Refer to Documentation: Consult the SAP documentation for RAP to understand the supported data types and structures. This can help you align your action definitions with the expected standards.
  
  
  Test with Simplified Parameters: If you are unsure which parameter is causing the issue, try simplifying the action by removing parameters or using basic data types to isolate the problem.
  
  
  Check for Updates: Ensure that your SAP system is up to date, as newer versions may have improved support for certain data types or may have fixed related bugs.
  
  
  Consult Community or Support: If the issue persists, consider reaching out to the SAP community or SAP support for further assistance. They may provide insights based on similar experiences.
  
  
  Related Information
  
  RAP Model: The RAP model is designed to simplify the development of business applications in SAP S/4HANA. It emphasizes the use of behavior definitions, service definitions, and entity definitions.
  Behavior Definition: This is where actions, queries, and other behaviors of an entity are defined. Understanding how to properly define these behaviors is crucial for successful RAP development.
  SAP Notes and KBA: Check SAP Notes and Knowledge Base Articles (KBA) for any known issues or additional guidance related to RAP and this specific error message.
  
  By following these steps and guidelines, you should be able to identify and resolve the cause of the RAP_RUNTIME023 error in your SAP application.