Message type: E = Error
Message class:  SV - View Maintenance: Customize Messages 
Message number: 348
Message text: User & is already processing &
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message SV348 typically indicates that a user is already processing a particular transaction or task, which prevents another instance of that transaction from being executed by the same user. This can occur in various scenarios, such as when a user tries to access a transaction that is already open or when a background job is running that locks the user out of certain actions.
Cause: Concurrent Processing: The user is attempting to execute a transaction that is already being processed by them. Session Lock: The user may have multiple sessions open, and one of them is already processing the transaction. Background Jobs: A background job may be running that locks the user from executing the same transaction. Transaction Locking: The transaction may be locked due to a previous incomplete process or an error.
Solution: Check Active Sessions: Verify if there are multiple sessions open for the same user. Close any unnecessary sessions. Wait for Completion:
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