How To Fix S03110 - Error during RFC call; could not convert parameters to &1

SAP Error Message - Details

• Message type: E = Error

• Message class: S03 - Messages for Enjoy TCC Monitors, July 20, 1999

• Message number: 110

• Message text: Error during RFC call; could not convert parameters to &1

What causes this issue?

You can change online parameters in the workload monitor during the
runtime. This change failed due to an error during the RFC call of the
corresponding instance. The connection could not be created. The
selected instance is possibly currently inactive, in which case, it is
not possible to create a connection.

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?

Repeat the action. Check whether the instance is active. If the error
persists, check the RFC connection to the affected instance with
transaction <DS:TRAN.SM59>SM59</> (Display and Maintenance of RFC
Connections).

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 S03110 - Error during RFC call; could not convert parameters to &1 ?

  The SAP error message S03110, which states "Error during RFC call; could not convert parameters to &1," typically occurs during Remote Function Call (RFC) operations when there is an issue with the data types or structures being passed between systems. This error can arise due to various reasons, including:
  Causes:
  
  
  Data Type Mismatch: The parameters being passed in the RFC call do not match the expected data types in the target function module. For example, if a string is expected but an integer is provided, this error may occur.
  
  
  Structure Changes: If the structure of the data being sent has changed (e.g., fields added or removed) and the calling program has not been updated accordingly, this can lead to conversion issues.
  
  
  Encoding Issues: If there are character encoding mismatches between the systems (e.g., one system using UTF-8 and another using a different encoding), this can cause conversion errors.
  
  
  Null or Empty Values: Passing null or empty values where a non-null value is expected can also trigger this error.
  
  
  Version Mismatch: If there is a version mismatch between the systems involved in the RFC call, it may lead to incompatibilities in the function modules being called.
  
  
  Solutions:
  
  
  Check Data Types: Review the data types of the parameters being passed in the RFC call. Ensure that they match the expected types in the target function module.
  
  
  Update Structures: If there have been changes to the structures, ensure that all calling programs are updated to reflect these changes.
  
  
  Validate Input Values: Ensure that all input values being passed are valid and conform to the expected formats. Avoid passing null or empty values unless explicitly allowed.
  
  
  Check Encoding: Verify that both systems are using compatible character encodings. If necessary, convert the data to a common encoding before making the RFC call.
  
  
  Review Function Module: Check the function module being called for any changes or updates that may have occurred. Ensure that the calling program is compatible with the current version of the function module.
  
  
  Debugging: Use debugging tools to trace the RFC call and identify the exact point of failure. This can provide insights into which parameter is causing the issue.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module being called for any known issues or additional requirements.
  
  
  Related Information:
  
  RFC (Remote Function Call): A protocol used in SAP systems to enable communication between different SAP systems or between SAP and non-SAP systems.
  Function Module: A reusable piece of code in SAP that can be called from other programs or function modules.
  SAP Notes: Check SAP Notes for any specific fixes or recommendations related to the S03110 error.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or development team for further assistance.