How To Fix 5D266 - Error locking table & with key & & &

5D266 - Overview

• Message type: E = Error

• Message class: 5D - Error Messages for German Infotype Module Pools

• Message number: 266

• Message text: Error locking table & with key & & &

What causes this issue?

An error ocurred when locking table &V1& with the key &V2& &V3& &V4&.

System Response

The operation cannot be carried out.

How to fix this error?

Check your entries and the available lock entries concerning this
table. If necessary, inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

5D266 - Details

• The SAP error message 5D266, which indicates an issue with locking a table, typically arises in scenarios where multiple processes or users are trying to access or modify the same data concurrently. This can lead to contention for database locks, resulting in the error message.
  
  Cause:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same table or record simultaneously.
  Long-Running Transactions: A transaction that takes a long time to complete can hold locks longer than necessary, causing other transactions to wait.
  Deadlocks: Situations where two or more transactions are waiting for each other to release locks, leading to a deadlock.
  Database Configuration: Issues with the database configuration or lock settings can also lead to this error.
  
  
  Solution:
  
  Identify the Lock: Use transaction codes like SM12 (to view and manage locks) to identify which user or process is holding the lock.
  Release Locks: If a lock is held unnecessarily, you can manually release it