How To Fix XT105 - Could not unpack parameter &1

SAP Error Message - Details

• Message type: E = Error

• Message class: XT - Transport Management System

• Message number: 105

• Message text: Could not unpack parameter &1

What causes this issue?

An error occurred in the TMS communication layer.
Command: <LS>&V2&</>
System: <LS>&V3&</>
Function: <LS>TMS_CI_DECODE_PARAMETER</>
Error: <LS>&V4&</>
Parameter: <LS>&V1&</>

System Response

The function terminates.

How to fix this error?

The specified parameter could not be decoded after transfer. Correct
the error and execute the command again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message XT105 - Could not unpack parameter &1 ?

  The SAP error message XT105, which states "Could not unpack parameter &1," typically occurs when there is an issue with the data being passed to a function module or method in SAP. This error can arise in various contexts, such as when dealing with RFC (Remote Function Call) or when processing data in ABAP programs.
  Causes:
  
  Data Type Mismatch: The parameter being passed may not match the expected data type or structure. This can happen if the data is not formatted correctly or if there is a discrepancy in the expected length of the data.
  Corrupted Data: The data being sent may be corrupted or incomplete, leading to issues when the system tries to unpack it.
  Incorrect Function Module Call: If the function module or method is called incorrectly, it may lead to this error.
  Version Mismatch: If there are different versions of the function module or method being used, it may lead to incompatibility issues.
  
  Solutions:
  
  Check Data Types: Ensure that the data types of the parameters being passed match the expected types in the function module or method. Use the appropriate data structures and types.
  Validate Data: Before passing data to the function, validate it to ensure it is complete and correctly formatted. This can include checking for null values, length, and data integrity.
  Review Function Module Calls: Double-check the function module or method calls in your ABAP code to ensure they are being called with the correct parameters and in the correct order.
  Debugging: Use the ABAP debugger to step through the code and identify where the error occurs. This can help pinpoint the exact parameter causing the issue.
  Check for Updates: If you are using a custom function module or method, ensure that it is up to date and compatible with the current version of SAP you are using.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates its knowledge base with solutions and workarounds for common errors.
  Documentation: Review the documentation for the specific function module or method you are using to understand the expected parameters and their formats.
  Community Forums: Consider searching or posting in SAP community forums or discussion groups, as other users may have encountered and resolved similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.