How To Fix OO296 - Parameter &1 &2 &3: Incorrect typing category: Ref. obj. not embeddable

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 296

• Message text: Parameter &1 &2 &3: Incorrect typing category: Ref. obj. not embeddable

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO296 - Parameter &1 &2 &3: Incorrect typing category: Ref. obj. not embeddable ?

  The SAP error message OO296, which states "Parameter &1 &2 &3: Incorrect typing category: Ref. obj. not embeddable," typically occurs in the context of Object-Oriented ABAP programming. This error indicates that there is an issue with the way a reference object is being used in your code, specifically that the object type you are trying to use is not embeddable.
  Cause:
  
  Incorrect Object Type: The error usually arises when you are trying to use a reference object that is not defined as embeddable. In ABAP, certain object types (like standard classes) cannot be embedded in other objects (like structures or tables).
  Parameter Definition: The parameters defined in a method or function module may not match the expected types. If a method expects an embeddable type and you pass a non-embeddable reference type, this error will occur.
  Inheritance Issues: If you are working with inheritance, ensure that the base class is embeddable if you are trying to embed it in a derived class.
  
  Solution:
  
  Check Object Types: Review the types of the parameters being passed to ensure they are embeddable. You can do this by checking the class definitions and ensuring that the types are compatible.
  Change Parameter Types: If you have control over the method or function module, consider changing the parameter types to use embeddable types or structures instead of reference types.
  Use Value Semantics: If you need to pass an object, consider passing it by value instead of by reference, if applicable. This can sometimes resolve the issue.
  Refactor Code: If the design allows, refactor your code to avoid the need for embedding non-embeddable types. This might involve changing how you structure your classes or methods.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for Object-Oriented ABAP to understand the rules around embeddable and non-embeddable types.
  SAP Community: Check forums and community discussions for similar issues. Other developers may have encountered the same error and can provide insights or solutions.
  Debugging: Use the ABAP debugger to step through your code and identify where the incorrect type is being passed. This can help you pinpoint the exact location of the error.
  
  By addressing the type compatibility and ensuring that you are using embeddable types where required, you should be able to resolve the OO296 error.