How To Fix SMT157 - &1 is an interface, not a class

SMT157 - Overview

• Message type: E = Error

• Message class: SMT -

• Message number: 157

• Message text: &1 is an interface, not a class

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMT157 - &1 is an interface, not a class ?

  The SAP error message SMT157 indicates that there is an attempt to use an interface as if it were a class. This typically occurs in ABAP programming when you are trying to instantiate an interface or call a method that is not defined in a class context.
  
  Cause:
  
  Incorrect Instantiation: You may be trying to create an instance of an interface using the CREATE OBJECT statement, which is only valid for classes.
  Method Call on Interface: You might be trying to call a method that is defined in an interface without implementing it in a class.
  Misunderstanding of Object-Oriented Concepts: There may be a misunderstanding of how interfaces and classes work in ABAP.
  
  
  Solution:
  
  
  Check Instantiation: Ensure that you are not trying to instantiate an interface. Instead, you should implement the interface in a class and then create an instance of that class.
  INTERFACE if_example.
    METHODS method_example.
  ENDINTERFACE.
  
  CLASS cl_example DEFINITION.
    INTERFACES if_example.
  ENDCLASS.
  
  CLASS cl_example IMPLEMENTATION.
    METHOD