How To Fix SOS_MAPPING156 - Visibility and modifiability adapted to match the defined superclass

SAP Error Message - Details

• Message type: E = Error

• Message class: SOS_MAPPING - Object Services: Persistence Mapping for Messages

• Message number: 156

• Message text: Visibility and modifiability adapted to match the defined superclass

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SOS_MAPPING156 - Visibility and modifiability adapted to match the defined superclass ?

  The SAP error message SOS_MAPPING156 typically occurs in the context of ABAP programming, particularly when dealing with class inheritance and mapping between superclasses and subclasses. This error indicates that there is a mismatch in the visibility and modifiability of attributes or methods between a subclass and its superclass.
  Cause:
  The error arises when:
  
  A subclass attempts to redefine an attribute or method from its superclass with a different visibility (e.g., changing a public attribute to private).
  The modifiability of an attribute or method in the subclass does not match that of the superclass. For example, if a method in the superclass is defined as final, it cannot be overridden in the subclass.
  
  Solution:
  To resolve the SOS_MAPPING156 error, you should:
  
  Check Visibility: Ensure that the visibility of attributes and methods in the subclass matches that of the superclass. If the superclass has a public attribute, the subclass should also define it as public.
  Check Modifiability: Ensure that the modifiability of methods and attributes is consistent. If a method in the superclass is defined as final, do not attempt to override it in the subclass.
  Review Inheritance Structure: Make sure that the inheritance structure is correctly defined and that the subclass is appropriately extending the superclass without violating its constraints.
  Adjust Definitions: Modify the definitions in the subclass to align with those in the superclass. This may involve changing the visibility or removing any overriding attempts that are not allowed.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for detailed information on class definitions, inheritance, and visibility rules.
  SAP Community: Engage with the SAP Community forums for discussions and solutions related to similar issues encountered by other developers.
  Debugging Tools: Utilize debugging tools within the ABAP Workbench to trace the execution and identify where the mismatch occurs.
  
  By following these steps, you should be able to resolve the SOS_MAPPING156 error and ensure that your class definitions are correctly aligned with the inheritance rules in ABAP.