How To Fix W3_TOOL151 - Error in parameter specification for service

SAP Error Message - Details

• Message type: E = Error

• Message class: W3_TOOL - ITS: Maintenance Messages

• Message number: 151

• Message text: Error in parameter specification for service

What causes this issue?

There is an error in the parameters entered for the Internet service.

System Response

The system cannot save the Internet service.

How to fix this error?

Check the parameters you have entered. You cannot use:
Spaces in parameter names
Duplicate parameter names

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W3_TOOL151 - Error in parameter specification for service ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W3_TOOL151 - Error in parameter specification for service
  
  Cause:
  This error typically occurs when there is an incorrect or incomplete parameter specification in the configuration of a web service or HTTP service in the SAP system. The system expects certain parameters to be passed or configured correctly for the service to function, and if these parameters are missing, malformed, or invalid, the error W3_TOOL151 is raised.
  Common causes include:
  
  Incorrect service URL or endpoint parameters.
  Missing mandatory parameters in the service call.
  Incorrect configuration in the Internet Communication Framework (ICF) service.
  Errors in the service handler or service definition.
  Parameter mismatch between the client request and the service definition.
  
  
  Solution:
  To resolve the W3_TOOL151 error, follow these steps:
  
  
  Check Service Configuration:
  
  Go to transaction SICF (Internet Communication Framework).
  Locate the service that is causing the error.
  Verify that the service parameters are correctly defined.
  Ensure that the service handler class and method are correctly assigned.
  
  
  
  Verify Parameters Passed:
  
  Check the parameters being passed to the service.
  Ensure all mandatory parameters are included.
  Validate the format and values of the parameters.
  
  
  
  Review Service Implementation:
  
  If you have custom service handlers, check the ABAP code for parameter handling.
  Make sure the code correctly processes the input parameters.
  
  
  
  Check URL and Request:
  
  If the service is called via URL, verify the URL syntax and query parameters.
  Use tools like SAP Gateway Client (transaction /IWFND/GW_CLIENT) or external tools like Postman to test the service call.
  
  
  
  Check SAP Notes and Documentation:
  
  Search for SAP Notes related to W3_TOOL151 for any known issues or patches.
  Sometimes, specific kernel or support package updates fix related issues.
  
  
  
  Trace and Debug:
  
  Use transaction ST22 to check for any dumps related to the service call.
  Use transaction SMICM to check ICM logs.
  Enable HTTP trace or use transaction SICF to trace the service call.
  Debug the service handler if necessary.
  
  
  
  
  Related Information:
  
  Transaction SICF: Used to maintain and test HTTP services.
  Transaction /IWFND/GW_CLIENT: SAP Gateway Client for testing OData and web services.
  ICF (Internet Communication Framework): Framework for HTTP services in SAP.
  SAP Notes: Check SAP Support Portal for notes related to W3_TOOL151.
  Common scenarios: This error is common in web service calls, OData services, or any HTTP-based communication where parameters are passed.
  
  
  If you provide more context (e.g., which service or scenario you are working on), I can help with more specific guidance.