How To Fix 65331 - DCS-based class & cannot be used as copy reference

SAP Error Message - Details

• Message type: E = Error

• Message class: 65 - Securities class data

• Message number: 331

• Message text: DCS-based class & cannot be used as copy reference

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 65331 - DCS-based class & cannot be used as copy reference ?

  The SAP error message 65331, which states "DCS-based class & cannot be used as copy reference," typically occurs when you are trying to create a copy of a class that is based on the Dynamic Class Structure (DCS) in the ABAP programming environment. DCS is a feature in SAP that allows for dynamic class definitions and is often used in scenarios involving polymorphism and dynamic behavior.
  Cause:
  The error arises because DCS-based classes have certain restrictions that prevent them from being copied. Specifically, DCS classes are designed to be flexible and dynamic, and as such, they do not support the standard copying mechanisms that are available for regular ABAP classes. This is a design choice to maintain the integrity and dynamic nature of DCS classes.
  Solution:
  To resolve this error, consider the following approaches:
  
  
  Avoid Copying DCS Classes: Instead of trying to copy the DCS-based class, you may need to create a new class from scratch or use the existing class as a reference without copying it.
  
  
  Refactor Your Design: If you find yourself needing to copy a DCS class, it may be worth reviewing your design. Consider whether you can achieve your goals through composition or inheritance rather than copying.
  
  
  Use Interfaces: If you need to share functionality, consider defining an interface that both the DCS class and any new classes can implement. This allows for shared behavior without the need to copy classes.
  
  
  Check Documentation: Review the SAP documentation for DCS classes to understand their limitations and best practices. This can provide insights into how to work with these classes effectively.
  
  
  Consult SAP Notes: Sometimes, specific issues or enhancements related to DCS classes may be documented in SAP Notes. Check the SAP Support Portal for any relevant notes that might address your specific scenario.
  
  
  Related Information:
  
  Dynamic Class Structure (DCS): Understand the principles of DCS and how it differs from traditional class structures in ABAP.
  ABAP Class Design: Familiarize yourself with best practices in ABAP class design, including when to use inheritance, interfaces, and composition.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have found.
  
  By following these guidelines, you should be able to navigate the limitations of DCS-based classes and find a suitable approach for your development needs.