How To Fix SIW036 - At least two parameters expected in target signature

SAP Error Message - Details

• Message type: E = Error

• Message class: SIW - Service Implementation Workbench

• Message number: 036

• Message text: At least two parameters expected in target signature

What causes this issue?

SOA services follow patterns like Query<->Response or Request
<->Confirmation. As a consequence, a request and a response type must be
filled from the API parameters. This is not possible, as less then two
parameters exist in the target signature.

System Response

A mapping check error occurred. As long as the mapping is not complete,
subsequent steps like the ES Repository content generation, the
generation of proxies or repository objects will not be started. The
process is interrupted due to the negative check result.

How to fix this error?

Please check your API method - especially the number of parameters.
If you can not find any problem here, contact the originator of the
populator class used by your current configuration.

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 SIW036 - At least two parameters expected in target signature ?

  The SAP error message SIW036: At least two parameters expected in target signature typically occurs in the context of SAP BusinessObjects or SAP BW when there is an issue with the way a function or method is being called, particularly when it involves parameters.
  Cause:
  This error generally indicates that a function or method is expecting at least two parameters to be passed to it, but it is either receiving fewer than that or none at all. This can happen due to:
  
  Incorrect Function Call: The function is being called with the wrong number of arguments.
  Configuration Issues: There may be a misconfiguration in the report or query that is leading to this error.
  Data Source Issues: The data source being queried may not be set up correctly, leading to missing parameters.
  Version Compatibility: There may be compatibility issues between different versions of SAP components.
  
  Solution:
  To resolve the SIW036 error, you can take the following steps:
  
  
  Check Function Calls: Review the code or configuration where the function is being called. Ensure that you are passing the correct number of parameters as required by the function signature.
  
  
  Review Report/Query Configuration: If this error occurs in a report or query, check the parameters defined in the report/query settings. Ensure that all required parameters are correctly defined and populated.
  
  
  Validate Data Sources: Ensure that the data sources being used are correctly configured and that they provide the necessary parameters for the function being called.
  
  
  Debugging: If you have access to debugging tools, use them to trace the execution of the function and see where the parameters are being lost or not passed correctly.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific function or method you are using to ensure you understand the expected parameters and their types.
  
  
  Check for Updates: Ensure that your SAP system is up to date. Sometimes, bugs in earlier versions can lead to such errors, and applying patches or updates can resolve the issue.
  
  
  Seek Help from SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if you suspect it may be a bug or a deeper configuration issue.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP Notes often provide solutions or workarounds for specific error messages.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  Documentation: Review the official SAP documentation for the specific module or component you are working with to understand the expected behavior and requirements.
  
  By following these steps, you should be able to identify the cause of the SIW036 error and implement a solution to resolve it.