How To Fix SWDP_WB_TOOL154 - Signature of & does not match the component interface &

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 154

• Message text: Signature of & does not match the component interface &

What causes this issue?

The Web Dynpro component &V3& implements the Web Dynpro interface &V2&.
The signature for &V1& in &V4& of the Web Dynpro component &V3& differs
from the one for &V1& in &V4& of the Web Dynpro interface &V2&.

System Response

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

How to fix this error?

Match up &V4& of the Web Dynpro component &V3& with the Web Dynpro
interface definition &V2&.

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_TOOL154 - Signature of & does not match the component interface & ?

  The SAP error message SWDP_WB_TOOL154 indicates that there is a mismatch between the signature of a component interface and the implementation of that interface in the Web Dynpro application. This typically occurs when there are changes made to the interface (like adding or removing parameters) without corresponding updates to the implementation.
  Cause:
  
  Interface Changes: The component interface has been modified (e.g., parameters added, removed, or changed) but the implementing component has not been updated accordingly.
  Version Mismatch: The version of the component interface being used does not match the version of the implementation.
  Transport Issues: If the changes were transported from one system to another, the transport might not have included all necessary objects, leading to inconsistencies.
  
  Solution:
  
  Check Interface Definition: Review the component interface definition to ensure that it matches the implementation. Look for any discrepancies in the parameters.
  Update Implementation: If the interface has changed, update the implementing component to match the new interface signature. This may involve modifying method signatures, adding or removing parameters, etc.
  Rebuild the Component: Sometimes, simply rebuilding the Web Dynpro component can resolve the issue. This can be done in the Web Dynpro Workbench.
  Transport Consistency: If the issue arose after a transport, ensure that all related objects were transported correctly. You may need to re-transport the component interface and its implementation.
  Check for Dependencies: Ensure that there are no other components or dependencies that might be affected by the changes made to the interface.
  
  Related Information:
  
  Web Dynpro Documentation: Refer to the official SAP documentation for Web Dynpro for more details on component interfaces and their implementation.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: Use the debugging tools in SAP to trace the execution and identify where the mismatch occurs.
  Version Control: Maintain version control of your components to avoid such issues in the future.
  
  By following these steps, you should be able to resolve the SWDP_WB_TOOL154 error and ensure that your Web Dynpro application functions correctly.