How To Fix SCRL572 - 'CLASS_CONSTRUCTOR' is not allowed as a method ID.

SAP Error Message - Details

• Message type: E = Error

• Message class: SCRL - Messages for custom resuse libraries

• Message number: 572

• Message text: 'CLASS_CONSTRUCTOR' is not allowed as a method ID.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SCRL572 - 'CLASS_CONSTRUCTOR' is not allowed as a method ID. ?

  The SAP error message SCRL572 indicates that there is an issue with the use of a class constructor in the context where it is not allowed. Specifically, the error message states that the class constructor (CLASS_CONSTRUCTOR) is being incorrectly used as a method ID.
  Cause:
  The error typically arises in the following scenarios:
  
  Incorrect Method Declaration: You may have declared a method in a class that is intended to be a class constructor but is incorrectly defined or used as a regular method.
  Context Misuse: The class constructor is being referenced in a context where only instance methods are allowed, such as in certain method calls or event handlers.
  Syntax Issues: There may be syntax errors in the class definition or method declaration that lead to this confusion.
  
  Solution:
  To resolve the SCRL572 error, you can take the following steps:
  
  
  Check Method Declaration: Ensure that the class constructor is correctly defined. The class constructor should be declared using the CLASS_CONSTRUCTOR keyword and should not be treated as a regular method. For example:
  CLASS my_class DEFINITION.
    PUBLIC SECTION.
      CLASS CONSTRUCTOR.
  ENDCLASS.
  
  CLASS my_class IMPLEMENTATION.
    CLASS CONSTRUCTOR.
      " Initialization code here
    ENDCLASS.
  
  
  Review Method Calls: If you are trying to call the class constructor, remember that it is automatically invoked when the class is instantiated and should not be called directly like a regular method.
  
  
  Check Context: Ensure that you are not trying to use the class constructor in a context that only allows instance methods. If you need to perform initialization, consider using instance methods or static methods instead.
  
  
  Syntax Validation: Validate your code for any syntax errors that might be causing the confusion. Use the ABAP editor's syntax check feature to identify any issues.
  
  
  Documentation Review: Refer to the SAP documentation for class constructors and method definitions to ensure you are following the correct conventions.
  
  
  Related Information:
  
  ABAP Class Concepts: Understanding the difference between instance methods, static methods, and class constructors in ABAP is crucial.
  SAP Notes and Community: Check SAP Notes or the SAP Community for any known issues or additional guidance related to this error message.
  Debugging: If the error persists, consider debugging the code to trace where the class constructor is being incorrectly referenced.
  
  By following these steps, you should be able to resolve the SCRL572 error and ensure that your class constructor is used correctly within your ABAP program.