How To Fix LCA_LCK112 - An invalid iterator was found

SAP Error Message - Details

• Message type: E = Error

• Message class: LCA_LCK - Error Texts for the Lock Server Module

• Message number: 112

• Message text: An invalid iterator was found

What causes this issue?

A severe internal error has occurred.

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?

Contact the liveCache application group, lock server module.

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 LCA_LCK112 - An invalid iterator was found ?

  The SAP error message LCA_LCK112: An invalid iterator was found typically occurs in the context of SAP applications that utilize iterators for data processing, particularly in scenarios involving data locks or transactions. This error indicates that the system has encountered an iterator that is no longer valid, which can happen for several reasons.
  Causes:
  
  Data Locking Issues: The iterator may be referencing data that has been locked or modified by another transaction, leading to inconsistencies.
  Session Timeout: If the session has timed out or if the user has navigated away from the relevant transaction, the iterator may become invalid.
  Concurrency Problems: Multiple users or processes trying to access or modify the same data simultaneously can lead to invalid iterators.
  Code Bugs: There may be issues in the custom code or enhancements that improperly handle iterators.
  
  Solutions:
  
  Refresh the Session: Log out and log back into the SAP system to refresh the session and clear any invalid iterators.
  Check for Locks: Use transaction codes like SM12 (to check for locks) and SM21 (to check system logs) to identify if there are any locks on the data being accessed.
  Review Custom Code: If the error is occurring in a custom program or enhancement, review the code for proper handling of iterators and ensure that they are being managed correctly.
  Increase Timeout Settings: If session timeouts are a frequent issue, consider increasing the timeout settings in the SAP system.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, especially if it is affecting business-critical processes.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12, SM21, and ST22 for monitoring locks, system logs, and dumps, respectively.
  Documentation: Review SAP documentation related to data locking and iterators for a deeper understanding of how they function within the system.
  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 LCA_LCK112 error effectively.