How To Fix IS820 - Equipment &1 is already locked by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: IS - Equipment management

• Message number: 820

• Message text: Equipment &1 is already locked by user &2

What causes this issue?

INCLUDE 'SPERREN1' OBJECT DOKU ID TX LANGUAGE E

System Response

INCLUDE 'SPERREN2' OBJECT DOKU ID TX LANGUAGE E

How to fix this error?

INCLUDE 'SPERREN3' OBJECT DOKU ID TX LANGUAGE E
Special case;
In a contract you selected an item, selected the object list using the
menu path 'Extras -> Technical Objects', and entered a new piece of
equipment there or selected a pre-existing piece of equipment. A double
click takes you to the display of the equipment master, and now you want
to change to the change mode.
However, this step is not allowed for the following reason:
When equipment is installed in the object list - depending on the
Customizing setting - a user status is set. For this change of the user
status, the equipment must be locked so that other changes that change
the status again cannot be made at the same time.
Equipment that already exists in the object list are then locked for
changes, as the user could possibly want to delete them from the object
list, thus changing the user status.
In such a case, you cannot change the equipment master record until you
have left the contract.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IS820 - Equipment &1 is already locked by user &2 ?

  The SAP error message IS820 indicates that an equipment record (identified by &1) is currently locked by another user (identified by &2). This typically occurs when multiple users attempt to access or modify the same equipment record simultaneously, leading to a conflict.
  Cause:
  
  Concurrent Access: Another user is currently editing or viewing the equipment record, which locks it for other users.
  Session Timeout: A previous session may not have released the lock due to a timeout or improper logout.
  Long-running Transactions: A user may have a long-running transaction that keeps the lock on the equipment record.
  System Issues: Occasionally, system issues or bugs can lead to locks not being released properly.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to finish their work and release the lock. You can try again after some time.
  Identify the Lock: Use transaction code SM12 to check for locks. You can search for the equipment number and see which user has locked it.
  Contact the User: If you can identify the user who has the lock, you may contact them to see if they can release the lock.
  Release the Lock: If necessary and if you have the appropriate authorizations, you can manually delete the lock entry in SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the record.
  Check for System Issues: If this issue occurs frequently, it may be worth investigating if there are underlying system issues or if the locking mechanism is functioning as intended.
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors or warnings.
  SE11: To view the data dictionary and understand the structure of the equipment table.
  
  
  
  User Training: Ensure that users are trained on how to properly log out of sessions and manage their transactions to minimize locking issues.
  
  
  System Configuration: Review system settings related to locking behavior, especially if the issue is frequent.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking mechanisms in your version of SAP.
  
  
  By following these steps, you should be able to resolve the IS820 error and minimize its occurrence in the future.