How To Fix CL745 - Assignment of class "&" to class "&" was not created

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 745

• Message text: Assignment of class "&" to class "&" was not created

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL745 - Assignment of class "&" to class "&" was not created ?

  The SAP error message CL745, which states "Assignment of class '&' to class '&' was not created," typically occurs in the context of class hierarchies in the ABAP Object-Oriented programming environment. This error indicates that there is an issue with the assignment of one class to another, usually due to a violation of the rules governing class inheritance or interface implementation.
  Causes:
  
  
  Incompatible Class Types: The class you are trying to assign may not be compatible with the target class. For example, you might be trying to assign a class that does not inherit from the required superclass or does not implement the necessary interfaces.
  
  
  Circular Inheritance: If there is a circular reference in the class hierarchy, it can lead to this error.
  
  
  Missing Interfaces: If the class you are trying to assign does not implement all the required interfaces of the target class, this error can occur.
  
  
  Incorrect Class Definition: There may be issues in the class definition itself, such as syntax errors or missing components.
  
  
  Namespace Issues: If the classes are in different namespaces and there are restrictions on cross-namespace assignments, this could also lead to the error.
  
  
  Solutions:
  
  
  Check Class Compatibility: Ensure that the class you are trying to assign is compatible with the target class. Verify that it inherits from the correct superclass or implements the necessary interfaces.
  
  
  Review Class Hierarchy: Examine the class hierarchy for any circular references or incorrect relationships. Make sure that the inheritance structure is valid.
  
  
  Implement Required Interfaces: If the target class requires certain interfaces, ensure that the class you are trying to assign implements all of them.
  
  
  Correct Class Definition: Review the class definition for any syntax errors or missing components. Make sure that all necessary attributes and methods are defined correctly.
  
  
  Namespace Configuration: If the classes are in different namespaces, check the configuration and permissions related to cross-namespace assignments.
  
  
  Recreate the Class: If the issue persists, consider recreating the class or the assignment to ensure that there are no hidden issues.
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE24 (Class Builder) to view and edit class definitions.
  Documentation: Refer to SAP documentation on Object-Oriented programming for more details on class definitions and inheritance rules.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  If the problem continues after trying the above solutions, it may be helpful to consult with a colleague or reach out to SAP support for further assistance.