How To Fix CL791 - Class & cannot be assigned to other classes

CL791 - Overview

• Message type: E = Error

• Message class: CL - Classification

• Message number: 791

• Message text: Class & cannot be assigned to other classes

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL791 - Class & cannot be assigned to other classes ?

  The SAP error message CL791 indicates that a class cannot be assigned to other classes. This typically occurs in the context of object-oriented programming within the ABAP environment, particularly when dealing with class hierarchies and inheritance.
  
  Cause:
  The error can arise due to several reasons:
  
  Incorrect Class Definition: The class you are trying to assign may not be defined correctly or may not be compatible with the class you are trying to assign it to.
  Visibility Issues: The visibility of the class (public, protected, private) may prevent it from being assigned to another class.
  Abstract Classes: If the class is abstract, it cannot be instantiated or assigned in a way that would violate the rules of inheritance.
  Interface Implementation: If the class is supposed to implement an interface, but it does not correctly implement all the methods defined in that interface, it may lead to this error.
  Circular References: If there are circular references in the class