Message type: E = Error
Message class:  IW - Order Processing 
Message number: 229
Message text: System: PM notification & cannot be locked
You want to allocate the <GL:maintenance_notification>maintenance
notification</> to a <GL:maintenance_order>maintenance order</>.
The system tries to lock the PM notification but is unable to do so.
INCLUDE 'SYSTEMVERWALTER' OBJECT DOKU ID TX LANGUAGE E
Error message extract from SAP system. Copyright SAP SE.
The SAP error message IW229 indicates that a PM (Plant Maintenance) notification cannot be locked because it is currently being processed or accessed by another user or session. This can occur in various scenarios, such as when multiple users are trying to access or modify the same notification simultaneously.
Cause: Concurrent Access: Another user or session is currently editing or viewing the PM notification. System Lock: The notification is locked due to a previous transaction that did not release the lock properly. Database Lock: There may be a database-level lock on the notification record. Long-running Transactions: A long-running transaction may be holding the lock longer than expected.
Solution: Wait and Retry: If another user is accessing the notification, wait for them to finish and then try again. Check Lock Entries: Use transaction code SM12 to check for lock entries. You can look for locks related to the specific notification number and see if you can identify the user
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
IW228 System: PM notification &1 locked by &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
IW227 PM notification status does not allow creation of a PM order
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
IW230 System: Termination when you set status &1 return code: &2
What causes this issue?  You want to allocate the <GL:maintenance_notification>maintenance notification</> to a <GL:maintenance_order&g...
IW231 Number entered is not a PM notification
What causes this issue?  You have entered a notification number that, although it exists, is not a maintenance notification or service notification.Sy...
Click on this link to search all SAP messages.