How To Fix NR123 - Number range object &1 is locked by another user

SAP Error Message - Details

• Message type: E = Error

• Message class: NR - Number ranges

• Message number: 123

• Message text: Number range object &1 is locked by another user

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message NR123 - Number range object &1 is locked by another user ?

  The SAP error message NR123 indicates that a number range object is locked by another user. This typically occurs when multiple users or processes are trying to access or modify the same number range object simultaneously, leading to a conflict.
  Cause:
  
  Concurrent Access: Another user or process is currently using the number range object, which prevents your session from accessing it.
  Long Transactions: If a transaction that uses the number range object takes a long time to complete, it can lead to locks being held for an extended period.
  System Issues: Sometimes, system issues or bugs can cause locks to not be released properly.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for a few moments and then try again. The lock may be released once the other user or process completes their transaction.
  Identify the Lock: Use transaction code SM12 to check for locks on the number range object. You can see which user is holding the lock and the associated details.
  Release the Lock: If you have the necessary authorizations, you can manually delete the lock entry in SM12. However, be cautious with this approach, as it may disrupt the other user's transaction.
  Check for Long-Running Transactions: If you notice that a specific transaction is taking too long, investigate it to see if it can be optimized or if there are any issues causing delays.
  Contact Your Basis Team: If the issue persists or if you are unsure about releasing locks, it may be best to contact your SAP Basis team for assistance. They can provide insights into the system's performance and help resolve any underlying issues.
  
  Related Information:
  
  Number Range Objects: These are used in SAP to generate unique identifiers for various business objects (e.g., invoices, purchase orders).
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SNRO (to manage number range objects) and SM21 (to check system logs for errors).
  User Authorizations: Ensure that you have the necessary authorizations to access and manage number range objects, as this can affect your ability to resolve the issue.
  
  By following these steps, you should be able to address the NR123 error effectively.