How To Fix OL572 - Object type '&' must not be reassigned

SAP Error Message - Details

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 572

• Message text: Object type '&' must not be reassigned

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OL572 - Object type '&' must not be reassigned ?

  The SAP error message OL572, which states "Object type '&' must not be reassigned," typically occurs in the context of object-oriented programming in ABAP (Advanced Business Application Programming). This error indicates that you are trying to reassign an object reference that is not allowed to be changed after its initial assignment.
  Cause:
  The error can occur due to several reasons:
  
  Immutable Object Types: The object type you are trying to reassign is defined as immutable or is a constant. In ABAP, certain object types are designed to be non-reassignable to ensure data integrity.
  Incorrect Object Handling: You may be trying to change the reference of an object that is expected to remain constant throughout its lifecycle.
  Scope Issues: The object might be defined in a scope that does not allow reassignment, such as within a method or a specific block of code.
  
  Solution:
  To resolve the OL572 error, consider the following approaches:
  
  Check Object Definition: Review the definition of the object type you are working with. Ensure that it is not defined as immutable or constant.
  Avoid Reassignment: If the object is meant to be constant, avoid trying to reassign it. Instead, create a new instance of the object if you need a different reference.
  Use Local Variables: If you need to manipulate the object, consider using local variables to hold references to the object instead of trying to reassign the original reference.
  Refactor Code: If the logic requires reassignment, you may need to refactor your code to accommodate the constraints of the object type.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for more details on object-oriented programming in ABAP, especially regarding object types and their mutability.
  Debugging: Use the ABAP debugger to trace the execution of your code and identify where the reassignment is attempted.
  Community Forums: Check SAP community forums or Stack Overflow for similar issues and solutions shared by other developers.
  
  By understanding the nature of the object type and adhering to its constraints, you can effectively resolve the OL572 error in your ABAP code.