How To Fix HRPAYDE_TU_TEST_FUNC004 - Class &1 is not defined as a friend of &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: HRPAYDE_TU_TEST_FUNC - Test Functions Germany

• Message number: 004

• Message text: Class &1 is not defined as a friend of &2.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message HRPAYDE_TU_TEST_FUNC004 - Class &1 is not defined as a friend of &2. ?

  The SAP error message HRPAYDE_TU_TEST_FUNC004 with the description "Class &1 is not defined as a friend of &2" typically occurs in the context of ABAP programming, particularly when dealing with class visibility and access control in Object-Oriented ABAP.
  Cause:
  This error arises when you are trying to access a method or attribute of a class (denoted as &1) from another class (denoted as &2), but the first class is not declared as a "friend" of the second class. In ABAP, a class can declare other classes as friends, allowing them to access its private and protected members. If this relationship is not established, you will encounter this error.
  Solution:
  To resolve this error, you need to ensure that the class you are trying to access (class &1) is declared as a friend in the class that is trying to access it (class &2). Here’s how you can do that:
  
  
  Open the Class Definition: Go to the class definition of class &2 in the ABAP Workbench (SE80 or SE24).
  
  
  Add Friend Class:
  
  In the class definition, look for the section where you can define friends (usually under the "Visibility" section).
  Add the name of class &1 to the list of friend classes. This is done using the FRIENDS keyword.
  Example:
  CLASS class_name DEFINITION
    FRIENDS class_name_of_friend.
  
  
  
  
  Activate the Changes: After making the changes, activate the class definition.
  
  
  Test the Code: Run the program or transaction again to see if the error is resolved.
  
  
  Related Information:
  
  Access Modifiers: In ABAP, classes can have public, protected, and private sections. Understanding these access modifiers is crucial for managing visibility and access.
  Friend Classes: The concept of friend classes allows for controlled access to private and protected members, which is useful for encapsulation while still allowing certain classes to interact closely.
  ABAP Documentation: For more detailed information, refer to the official SAP documentation on Object-Oriented ABAP programming, which covers class definitions, access control, and friend classes.
  
  If you continue to experience issues after following these steps, consider checking for typos in class names or ensuring that the classes are properly defined and activated.