How To Fix CL790 - The assignment of class & to class & must have the link indicator

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 790

• Message text: The assignment of class & to class & must have the link indicator

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL790 - The assignment of class & to class & must have the link indicator ?

  The SAP error message CL790 indicates that there is an issue with the assignment of one class to another in the Class Builder (transaction code CL02 or CL03). Specifically, it means that the assignment of the specified class to another class requires a link indicator, which is not set.
  Cause:
  The error occurs when you attempt to assign a class to another class without specifying the link indicator. In SAP, when you create a class hierarchy, you need to define how classes are related to each other. The link indicator is a crucial part of this relationship, as it indicates whether the class is a subclass or a superclass.
  Solution:
  To resolve this error, follow these steps:
  
  
  Open Class Builder: Go to transaction code CL02 (Change Class) or CL03 (Display Class) to access the class that is causing the error.
  
  
  Check Class Assignment: Navigate to the "Class" tab and look for the section where class assignments are made.
  
  
  Set Link Indicator: Ensure that the link indicator is set correctly. You may need to:
  
  Select the appropriate link indicator (e.g., "Subclass" or "Superclass") based on the relationship you want to establish.
  If you are creating a new class, make sure to define its relationship with the parent class properly.
  
  
  
  Save Changes: After making the necessary adjustments, save your changes.
  
  
  Test the Assignment: Try to reassign the class to see if the error persists.
  
  
  Related Information:
  
  Class Hierarchy: Understanding the class hierarchy in SAP is essential. Classes can be organized in a hierarchy where subclasses inherit attributes and methods from their superclasses.
  Documentation: Refer to SAP documentation or help files for more detailed information on class assignments and link indicators.
  Authorization: Ensure that you have the necessary authorizations to make changes to class assignments in the system.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to class assignments and error messages.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.