Message type: E = Error
Message class:  FINS_FI_DEFSUM - Deferred Summarization 
Message number: 050
Message text: Data processing for project &1 has already started.
Since data processing has already started, the selected function isn't
supported.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
You can start data processing and/or check the data processing status in
the <DS:TRAN.FINS_DEFSUM_PREPARE>project cockpit</>.
To see any progress, you should refresh the project cockpit display
regularly. Additionally, you can view the running background jobs in
<DS:TRAN.SM37>Job Selection</>.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FINS_FI_DEFSUM050 indicates that data processing for a specific project (denoted by &1) has already started. This typically occurs in the context of financial data processing, such as during the execution of a financial report or when trying to perform a financial operation that involves a project.
Cause: Concurrent Processing: The error usually arises when there is an attempt to start a process that is already in progress for the same project. This can happen if multiple users or processes are trying to execute the same financial operation simultaneously. Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a process is already running, the system will not allow another instance of the same process to start until the first one is completed. Long-Running Processes: If a previous process is taking longer than expected, it may lead to this error when another attempt is made to start the same
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