How To Fix SWDP_WB_TOOL385 - The layout data type of "&1" must be of type "&2".

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_TOOL - Web Dynpro: Messages for Workbench Tools

• Message number: 385

• Message text: The layout data type of "&1" must be of type "&2".

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The layout selected for the superordinate container requires that the
first child element has a special layout data type.

How to fix this error?

Adjust the layout data type of the element as suggested (for example,
ROW_HEAD_DATA for ROW_LAYOUT, FORM_TOP_DATA for FORM_LAYOUT).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WB_TOOL385 - The layout data type of "&1" must be of type "&2". ?

  The SAP error message SWDP_WB_TOOL385 indicates that there is a mismatch in the expected data type for a layout element in a Web Dynpro application. Specifically, the error message states that the layout data type of a certain element (represented by "&1") must be of a specific type (represented by "&2"). This typically occurs when the layout configuration does not align with the data type defined in the underlying model or context.
  Cause:
  
  Data Type Mismatch: The layout element is expecting a certain data type (e.g., string, integer, etc.), but the actual data type provided does not match this expectation.
  Incorrect Binding: The binding of the UI element to the context node may be incorrect, leading to a mismatch in the expected data type.
  Model Changes: If there have been recent changes to the data model or context structure, the layout may not have been updated accordingly.
  
  Solution:
  
  Check Data Types: Verify the data type of the context attribute that is bound to the layout element. Ensure that it matches the expected type defined in the layout configuration.
  Update Bindings: If the binding is incorrect, update the binding of the UI element to point to the correct context attribute that has the expected data type.
  Review Context Node: Ensure that the context node structure is correctly defined and that the attributes have the appropriate data types.
  Rebuild the Application: Sometimes, rebuilding the application or refreshing the Web Dynpro component can resolve inconsistencies.
  Check for Changes: If there have been recent changes to the data model, ensure that all related components (including layouts) are updated to reflect these changes.
  
  Related Information:
  
  Web Dynpro Documentation: Refer to the official SAP documentation for Web Dynpro to understand the expected data types for various UI elements.
  Debugging Tools: Use the debugging tools available in the SAP Web IDE or ABAP Workbench to trace the data flow and identify where the mismatch occurs.
  SAP Community: Engage with the SAP Community forums for additional insights or similar issues faced by other developers.
  
  By following these steps, you should be able to identify and resolve the SWDP_WB_TOOL385 error in your SAP Web Dynpro application.