How To Fix SWDP_WB_CHIP020 - Port &1 must use the mandatory method parameter &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_CHIP - Message Class

• Message number: 020

• Message text: Port &1 must use the mandatory method parameter &2

What causes this issue?

Interface method/event &V3& has mandatory parameter &V2&. This is not
specified in port &V1&.

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 including signatures permitted as
inports or outports can be selected from the Create pushbutton.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WB_CHIP020 - Port &1 must use the mandatory method parameter &2 ?

  The SAP error message SWDP_WB_CHIP020 indicates that a specific port in a Composite Application Framework (CAF) component, such as a Web Dynpro component or a Composite Application, is not correctly configured. The error message states that a port (identified by &1) must use a mandatory method parameter (identified by &2).
  Cause:
  This error typically occurs when:
  
  A port in a Web Dynpro component is defined but does not implement the required method parameters as specified in the interface.
  The method associated with the port is expected to have certain parameters that are marked as mandatory, but these parameters are either missing or incorrectly defined in the implementation.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Port Definition:
  
  Go to the Web Dynpro component or the relevant CAF component where the error is occurring.
  Verify the port definition and ensure that it is correctly set up.
  
  
  
  Review the Method Signature:
  
  Identify the method associated with the port that is causing the error.
  Check the method signature to ensure that all mandatory parameters are included and correctly defined.
  
  
  
  Implement Missing Parameters:
  
  If any mandatory parameters are missing from the method implementation, add them as required.
  Ensure that the data types and names of the parameters match those defined in the interface.
  
  
  
  Rebuild and Test:
  
  After making the necessary changes, rebuild the application or component.
  Test the application to ensure that the error is resolved and that the port functions as expected.
  
  
  
  Check Documentation:
  
  Refer to the SAP documentation for Web Dynpro or the specific component you are working with for additional guidance on port and method configurations.
  
  
  
  Related Information:
  
  Web Dynpro: A SAP technology for developing web applications.
  Composite Applications: Applications that combine multiple services or components into a single user interface.
  Method Parameters: In the context of Web Dynpro, methods can have input and output parameters that need to be correctly defined for the application to function properly.
  
  If the issue persists after following these steps, consider checking SAP community forums or reaching out to SAP support for further assistance.