Message type: E = Error
Message class:  FINS_CFIN_ACC_VIEW - Central Finance: Messages for Accounting View of Logistics 
Message number: 021
Message text: Sales order &2 from source system &1 locked in Central Finance
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The SAP error message FINS_CFIN_ACC_VIEW021 indicates that a sales order from a source system is locked in Central Finance (CFIN). This typically occurs when there is an attempt to post or process financial data related to a sales order that is currently locked, preventing any changes or updates.
Cause: Locking Mechanism: The sales order is locked due to ongoing processes, such as data replication, posting, or other transactions that are currently being executed in the Central Finance system. Data Replication Issues: If there are issues with the data replication from the source system to Central Finance, it may lead to locks on certain objects. Concurrency: Multiple users or processes trying to access or modify the same sales order simultaneously can lead to locking issues. Incomplete Processes: If a previous process involving the sales order did not complete successfully, it may leave the order in a locked state.
Solution: Check Lock Entries: Use transaction code SM12 in the
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