How To Fix SO2_TOOL156 - The controller class & must be derived from & or &

SAP Error Message - Details

• Message type: E = Error

• Message class: SO2_TOOL - Messages for OXYGEN Page Editor

• Message number: 156

• Message text: The controller class & must be derived from & or &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SO2_TOOL156 - The controller class & must be derived from & or & ?

  The SAP error message SO2_TOOL156 indicates that there is an issue with the controller class in your SAP application. Specifically, it means that the controller class you are trying to use does not inherit from the expected base classes. This error typically arises in the context of SAP UI5 or SAP Fiori applications where MVC (Model-View-Controller) architecture is employed.
  
  Cause:
  The error occurs when:
  
  The controller class you are trying to implement does not extend from the required base classes, which are usually sap.ui.core.mvc.Controller or sap.ui.core.mvc.ControllerExtension.
  There might be a typo in the class name or the class is not properly defined in the namespace.
  The class might not be loaded correctly due to issues in the module path or configuration.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Class Definition:
  
  Ensure that your controller class is correctly defined and extends from the appropriate base class. For example:sap.ui.define([
      "sap/ui/core/mvc/Controller"
  ], function(Controller) {