How To Fix E4055 - The program &1 cannot be locked at present -> F1

SAP Error Message - Details

• Message type: E = Error

• Message class: E4 - Program maintenance functions within development system

• Message number: 055

• Message text: The program &1 cannot be locked at present -> F1

What causes this issue?

You cannot lock the required program.

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?

A lock has either already been set, or the program contains an editor
lock (in its attributes).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E4055 - The program &1 cannot be locked at present -> F1 ?

  The SAP error message E4055 indicates that a program cannot be locked at the moment. This typically occurs when multiple users or processes are trying to access or modify the same program simultaneously, leading to a locking conflict. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Concurrent Access: Another user or process is currently accessing the program, preventing your session from obtaining a lock.
  Long-Running Transactions: A transaction that takes a long time to complete may hold the lock longer than expected.
  System Performance Issues: High system load or performance issues can lead to delays in lock management.
  Lock Table Overflow: The lock table may be full, preventing new locks from being created.
  
  Solutions:
  
  Wait and Retry: If the program is being accessed by another user, wait for a few moments and then try again.
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. You can identify the user or process holding the lock and decide whether to wait or take action.
  Terminate Long-Running Processes: If you identify a process that is holding the lock for an extended period, you may need to terminate it (if appropriate and with caution).
  Increase Lock Table Size: If the lock table is full, consider increasing its size. This requires system administration privileges and should be done with caution.
  System Performance Monitoring: Monitor system performance to identify any bottlenecks that may be causing delays in lock management.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that may indicate underlying issues.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking mechanisms.
  Documentation: Review SAP documentation for best practices on managing locks and concurrency in your specific SAP environment.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.