As nature of SAP system behavior, whenever a user performs an update on any table, for that period of time a lock on that particular field of that table will be created to prevent any other user can update that table to obtain data consistency
During an update process of the user session, if the session get terminated due to any unforeseen error the lock entry will appear and remains on that field.
Steps to manual remove the lock:
1) Execute TCODE: SM12 and Click "List" button
2) The screen will show all the locked entries in the system
3) The details of the lock entry
4) Select the lock entry to be delete , click the "delete" button and choose the "Yes" button
5) The lock entry been remove
