Message type: E = Error
Message class: SY - ABAP/4 system messages
Message number: 603
Message text: Process cannot be reserved exclusively
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SY603
- Process cannot be reserved exclusively ?The SAP error message SY603, which states "Process cannot be reserved exclusively," typically occurs when a user or process attempts to lock or reserve a resource (like a process or a transaction) that is already being used or locked by another user or process. This can happen in various scenarios, such as when multiple users are trying to access the same transaction or when a background job is running that locks the process. Causes: Concurrent Access: Multiple users or processes are trying to access the same resource simultaneously. Background Jobs: A background job may be running that locks the process, preventing exclusive access. Lock Entries: There may be existing lock entries in the system that are preventing the process from being reserved exclusively. System Configuration: Certain configurations in the SAP system may restrict exclusive access to specific processes. Solutions: Check for Active Sessions: Use transaction code SM12 to check for active lock entries. If you find any
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