How To Fix ED255 - Source code has a read lock

ED255 - Overview

• Message type: E = Error

• Message class: ED - ABAP/4 Editor messages

• Message number: 255

• Message text: Source code has a read lock

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ED255 - Source code has a read lock ?

  The SAP error message ED255, which states "Source code has a read lock," typically occurs when a user attempts to access or modify an ABAP program or object that is currently locked for reading by another user or process. This locking mechanism is in place to prevent simultaneous changes that could lead to inconsistencies or data corruption.
  
  Cause:
  
  Concurrent Access: Another user or process is currently viewing or editing the same object (e.g., an ABAP program, function module, or class).
  Long-Running Transactions: A transaction that has been opened for a long time may hold a read lock on the object.
  Development Environment: In a development environment, multiple developers may be trying to access the same object simultaneously.
  
  
  Solution:
  
  Wait and Retry: If the lock is temporary, simply waiting for a few moments and then retrying the action may resolve the issue.
  Identify the Lock: Use transaction code SM12 to check for locks. You can filter by the