How To Fix SWDP_WB_CHIP017 - Port &1: The signature of &2 is not appropriate for a port

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_CHIP - Message Class

• Message number: 017

• Message text: Port &1: The signature of &2 is not appropriate for a port

What causes this issue?

An interface method or an interface event can only function as an inport
or outport of a CHIP if it has only one mandatory importing parameter,
or at least one optional importing parameter, and no mandatory changing
parameters.
The type of the parameter must be a table type defined in the data
dictionary, or a structure defined in the Data Dictionary. A type with
"TYPE REF TO" is not permitted.

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?

All interface methods and events permitted as inports or outports can be
selected using F4 help.

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_CHIP017 - Port &1: The signature of &2 is not appropriate for a port ?

  The SAP error message SWDP_WB_CHIP017 indicates that there is an issue with the signature of a port in a Web Dynpro component or a Composite Application Framework (CAF) application. This error typically arises when the port's signature does not match the expected format or type defined in the Web Dynpro component or the Composite Application.
  Cause:
  
  Mismatch in Port Signature: The port signature defined in the Web Dynpro component does not match the expected signature. This could be due to incorrect data types, missing parameters, or incorrect parameter names.
  Changes in Component: If there have been recent changes to the Web Dynpro component or the associated model, the port signature may have become outdated or incompatible.
  Configuration Issues: Incorrect configuration settings in the Web Dynpro application or the CAF application can lead to this error.
  
  Solution:
  
  Check Port Definition: Review the port definition in the Web Dynpro component. Ensure that the signature (data types, names, and number of parameters) matches what is expected.
  Update Component: If there have been changes to the component, ensure that all references to the port are updated accordingly. This may involve regenerating the component or re-importing it.
  Consistency Check: Perform a consistency check on the Web Dynpro application to identify any discrepancies in the component definitions.
  Rebuild the Application: Sometimes, rebuilding the application can resolve issues related to outdated signatures or configurations.
  Consult Documentation: Refer to the SAP documentation for Web Dynpro and CAF applications to ensure that you are following the correct procedures for defining and using ports.
  
  Related Information:
  
  Web Dynpro Documentation: SAP provides extensive documentation on Web Dynpro and CAF applications, which can be helpful in understanding port definitions and signatures.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: SAP Community and other forums can be valuable resources for finding solutions to similar issues encountered by other users.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.