How To Fix OO295 - Parameter &1 &2 &3: Typing category not suitable for object reference

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 295

• Message text: Parameter &1 &2 &3: Typing category not suitable for object reference

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO295 - Parameter &1 &2 &3: Typing category not suitable for object reference ?

  The SAP error message OO295, which states "Parameter &1 &2 &3: Typing category not suitable for object reference," typically occurs in ABAP programming when there is a mismatch between the expected data type and the actual data type being used in a method call or function module. This error is related to object-oriented programming in ABAP, where the typing categories of parameters must align with the expected types defined in the method signature.
  Cause:
  
  Mismatched Data Types: The most common cause of this error is that the parameter being passed to a method or function does not match the expected type. For example, if a method expects an object reference of a certain class and you pass a different type (like a primitive data type or a different class), this error will occur.
  Incorrectly Defined Method Signature: If the method signature is defined incorrectly or if the class/interface has been changed but the calling code has not been updated, this can lead to this error.
  Inheritance Issues: If you are dealing with inheritance and polymorphism, passing an object of a subclass where a superclass is expected can sometimes lead to this error if the method is not defined to accept the subclass type.
  
  Solution:
  
  Check Parameter Types: Review the method or function module signature to ensure that the parameters being passed match the expected types. Make sure that you are passing the correct object reference.
  Update Calling Code: If the method signature has changed, update the calling code to match the new signature.
  Use Casting: If you are sure that the object being passed is of a compatible type, you may need to use casting to convert it to the expected type.
  Debugging: Use the ABAP debugger to step through the code and inspect the types of the variables being passed to identify where the mismatch occurs.
  Check Inheritance: If you are working with class hierarchies, ensure that the method is defined in the correct class and that you are passing the correct type of object.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for more details on object-oriented programming in ABAP, including method definitions and parameter types.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  Code Review: Conduct a code review to ensure that all object references are being handled correctly and that the types are consistent throughout the application.
  
  By following these steps, you should be able to identify and resolve the OO295 error in your SAP ABAP code.