Message type: E = Error
Message class:  RPUGEN - General Error Messages in Procurement (ISR) 
Message number: 007
Message text: Flow log can only be transmitted/printed online
You started a program that issues a flow trace. However, the system
cannot issue flow traces when processing programs in the background.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Reschedule the program in the background and deactivate the flow trace.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message RPUGEN007 indicates that the flow log can only be transmitted or printed online. This error typically occurs in the context of generating or processing flow logs in SAP systems, particularly when dealing with payroll or HR-related functionalities.
Cause: The error is usually triggered when there is an attempt to process or print a flow log in a mode that is not supported. This can happen if: The system is trying to execute a batch job or background processing for a task that requires online processing. The user is attempting to access the flow log in a way that is not compatible with the current transaction or mode of operation.
Solution: To resolve the RPUGEN007 error, you can take the following steps: Switch to Online Processing: Ensure that you are executing the transaction or report in online mode rather than in the background. This may involve running the report directly from the SAP GUI rather
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