How To Fix LTR2_RN121 - Parameter '&2' not needed and cleaned for invalid number handler: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_RN - LTR2 RN: Message class

• Message number: 121

• Message text: Parameter '&2' not needed and cleaned for invalid number handler: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_RN121 - Parameter '&2' not needed and cleaned for invalid number handler: &1 ?

  The SAP error message LTR2_RN121 indicates that there is an issue with a parameter that is not needed and has been cleaned up due to an invalid number handler. This error typically arises in the context of SAP's Logistics Execution (LE) or Warehouse Management (WM) modules, particularly when dealing with handling units or inventory management.
  Cause:
  The error message LTR2_RN121 is triggered when:
  
  A parameter (denoted as &2) is being passed to a function or process that does not require it.
  The system has identified that the parameter is invalid or unnecessary, leading to its removal or "cleaning."
  This can occur due to incorrect configuration, data inconsistencies, or issues in the handling unit management process.
  
  Solution:
  To resolve the LTR2_RN121 error, consider the following steps:
  
  
  Check Configuration: Review the configuration settings related to handling units, inventory management, or the specific process you are working with. Ensure that all necessary parameters are correctly defined.
  
  
  Validate Data: Inspect the data being processed when the error occurs. Look for any inconsistencies or invalid entries that might be causing the parameter to be deemed unnecessary.
  
  
  Review Custom Code: If there is any custom code or enhancements in place that interact with the handling units or inventory processes, review this code to ensure it is not inadvertently passing unnecessary parameters.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or updates that might address this specific error. Sometimes, SAP releases patches or notes that provide fixes or workarounds for known issues.
  
  
  Debugging: If you have access to debugging tools, consider debugging the process to identify where the invalid parameter is being introduced. This can provide insights into the root cause of the issue.
  
  
  Consult Documentation: Review the official SAP documentation for the specific module you are working with to understand the expected parameters and their usage.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP that pertain to handling units and inventory management, such as HU02 (Handling Unit Management) or LT03 (Transfer Order).
  Error Logs: Check the application logs (transaction SLG1) for additional details that may provide context for the error.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the LTR2_RN121 error effectively.