How To Fix CX_WDK_CONTROLLER306 - UI property &1 bound to a dynpro field differing from the value binding

SAP Error Message - Details

• Message type: E = Error

• Message class: CX_WDK_CONTROLLER - FP/BE/BDC Controller Messages

• Message number: 306

• Message text: UI property &1 bound to a dynpro field differing from the value binding

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CX_WDK_CONTROLLER306 - UI property &1 bound to a dynpro field differing from the value binding ?

  The SAP error message CX_WDK_CONTROLLER306 typically indicates a mismatch between the UI property and the value binding in a Web Dynpro application. This error occurs when the property of a UI element is bound to a context attribute, but the data type or the value being passed does not match the expected type or format.
  Cause:
  
  Data Type Mismatch: The UI property is expecting a certain data type (e.g., string, integer, date), but the bound context attribute is of a different type.
  Value Binding Issues: The value being passed to the UI element does not conform to the expected format or constraints defined in the context.
  Incorrect Context Mapping: The context node or attribute may not be correctly mapped to the UI element, leading to inconsistencies.
  Dynamic Values: If the value is dynamically generated or modified at runtime, it may not align with the expected binding.
  
  Solution:
  
  Check Data Types: Ensure that the data types of the UI property and the context attribute match. You can do this by checking the data dictionary or the context node definitions.
  Review Value Binding: Verify that the value being bound to the UI element is in the correct format and adheres to any constraints (like length, range, etc.).
  Inspect Context Mapping: Go through the Web Dynpro component's context mapping to ensure that the UI element is correctly bound to the appropriate context attribute.
  Debugging: Use the debugging tools in the SAP environment to trace the values being passed and identify where the mismatch occurs.
  Check for Dynamic Changes: If the value is being changed dynamically, ensure that the logic handling these changes is correctly implemented and that it maintains the expected data type and format.
  
  Related Information:
  
  Web Dynpro Documentation: Refer to the official SAP documentation for Web Dynpro to understand the binding concepts and data types.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to this error.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed and resolved.
  
  By following these steps, you should be able to identify and resolve the cause of the CX_WDK_CONTROLLER306 error in your SAP Web Dynpro application.