How To Fix ML4HRUN121 - Modified Record refers to invalid Row Index &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ML4HRUN - Messages for New Actual Costing

• Message number: 121

• Message text: Modified Record refers to invalid Row Index &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ML4HRUN121 - Modified Record refers to invalid Row Index &1 ?

  The SAP error message ML4HRUN121 ("Modified Record refers to invalid Row Index &1") typically occurs in the context of handling data records in SAP, particularly when dealing with internal tables or data structures that involve row indexing. This error indicates that there is an attempt to reference a row index that does not exist or is out of bounds in the internal table.
  Causes:
  
  
  Invalid Row Index: The row index specified in the error message does not correspond to any existing row in the internal table. This can happen if:
  
  The index is negative or zero.
  The index exceeds the number of rows in the table.
  The table has been modified (rows added or deleted) after the index was determined.
  
  
  
  Data Consistency Issues: If there are inconsistencies in the data being processed, such as missing or corrupted records, this can lead to invalid row references.
  
  
  Programming Errors: Errors in the ABAP code, such as incorrect loop constructs or mishandling of table indices, can lead to this issue.
  
  
  Solutions:
  
  
  Check Row Index: Ensure that the row index being referenced is valid. You can do this by:
  
  Verifying that the index is within the bounds of the internal table (i.e., between 1 and the number of rows in the table).
  Adding checks in the code to validate the index before accessing the table.
  
  
  
  Debugging: Use the SAP debugger to step through the code and identify where the invalid index is being generated. Look for:
  
  Loops that may not be iterating correctly.
  Conditions that may lead to an index being set incorrectly.
  
  
  
  Data Validation: Ensure that the data being processed is complete and consistent. If the data is coming from an external source, validate it before processing.
  
  
  Error Handling: Implement error handling in your ABAP code to gracefully manage situations where an invalid index might be encountered. This can include logging the error and providing meaningful feedback.
  
  
  Review Code Logic: If the error is occurring in a custom program or enhancement, review the logic to ensure that it correctly handles the internal table and its indices.
  
  
  Related Information:
  
  ABAP Documentation: Review the SAP documentation for internal tables and data handling in ABAP to understand how to properly manage row indices.
  SAP Notes: Check the SAP Support Portal for any relevant notes or patches that may address this specific error or provide additional context.
  Community 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 identify the cause of the error and implement a solution to resolve it.