How To Fix OO167 - Class constructors and destructors do not have parameters and exceptions

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 167

• Message text: Class constructors and destructors do not have parameters and exceptions

What causes this issue?

The class constructor of a class and the destructor do not have
parameters or exceptions.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OO167 - Class constructors and destructors do not have parameters and exceptions ?

  The SAP error message OO167 indicates that there is an issue with the definition of class constructors and destructors in ABAP Object-Oriented programming. Specifically, this error arises when a class constructor or destructor is defined with parameters or exceptions, which is not allowed in ABAP.
  Cause:
  In ABAP, class constructors (CONSTRUCTOR) and destructors (DESTRUCTOR) are special methods that are automatically called when an instance of a class is created or destroyed. According to the ABAP language rules, these methods cannot take any parameters or raise exceptions. If you attempt to define a constructor or destructor with parameters or exceptions, you will encounter the OO167 error.
  Solution:
  To resolve the OO167 error, you need to modify the class definition by ensuring that the constructor and destructor do not have any parameters or exceptions. Here’s how you can do that:
  
  
  Remove Parameters: Ensure that the CONSTRUCTOR and DESTRUCTOR methods are defined without any parameters. For example:
  CLASS my_class DEFINITION.
    PUBLIC SECTION.
      METHODS: CONSTRUCTOR,
               DESTRUCTOR.
  ENDCLASS.
  
  CLASS my_class IMPLEMENTATION.
    METHOD CONSTRUCTOR.
      " Initialization code here
    ENDMETHOD.
  
    METHOD DESTRUCTOR.
      " Cleanup code here
    ENDMETHOD.
  ENDCLASS.
  
  
  Remove Exceptions: Ensure that the CONSTRUCTOR and DESTRUCTOR methods do not declare any exceptions. If you have any exception handling in these methods, you will need to refactor that logic to handle exceptions elsewhere in your code.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for more details on class definitions and the rules governing constructors and destructors.
  Best Practices: When designing classes in ABAP, consider using factory methods or other design patterns to handle object creation with parameters, rather than trying to pass parameters directly to the constructor.
  Debugging: If you encounter this error, check the class definition and implementation for any constructors or destructors that do not comply with the rules.
  
  By following these guidelines, you should be able to resolve the OO167 error and ensure that your ABAP classes are correctly defined.