How To Fix S03116 - Error during RFC call; cannot convert parameters on all instances

S03116 - Overview

• Message type: E = Error

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

• Message number: 116

• Message text: Error during RFC call; cannot convert parameters on all instances

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 one
or more instances. The connection could not be created. It is possible
that an instance is currently inactive. In this case, it is not
possible to create a connection.

System Response

How to fix this error?

Repeat the action. Check that all instances are active. If the error
persits, check the RFC connection to the affected instance using
transaction <DS:TRAN.SM59>SM59</> (Display and Maintenance of RFC
Connections).

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 S03116 - Error during RFC call; cannot convert parameters on all instances ?

  The SAP error message S03116, which indicates "Error during RFC call; cannot convert parameters," typically arises during Remote Function Call (RFC) operations when there is a mismatch in the data types or structures of the parameters being passed between the systems. This can occur in various scenarios, such as when calling a function module or when using RFC-enabled function modules.
  Causes:
  
  Data Type Mismatch: The parameters being passed do not match the expected data types in the function module. For example, passing a string where an integer is expected.
  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.
  Version Incompatibility: Different versions of the SAP systems involved may have different definitions for the function modules or data structures.
  Encoding Issues: Problems with character encoding can also lead to conversion errors, especially when dealing with non-ASCII characters.
  Missing Parameters: If