Message type: E = Error
Message class:  HRPAYSI - Messages for Function Group HR_INFOTYPE8_PAYROLL 
Message number: 001
Message text: Payroll driver &1 is not planned
You have tried to start payroll simulation with Report &V1&.
Payroll simulation can not be started.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message HRPAYSI001 indicates that the payroll driver specified in the payroll run is not planned or configured in the system. This error typically occurs when you attempt to execute a payroll run for a payroll area or period that does not have a corresponding payroll driver defined.
Cause: Missing Payroll Driver Configuration: The payroll driver for the specified payroll area is not set up in the system. Incorrect Payroll Area: The payroll area you are trying to process may not be correctly assigned to a payroll driver. Custom Payroll Driver: If a custom payroll driver is being used, it may not be properly configured or activated. Incorrect Payroll Period: The payroll period being processed may not be valid for the payroll driver.
Solution: Check Payroll Driver Configuration: Go to the transaction code SPRO (SAP Reference IMG). Navigate to Personnel Management > Payroll > Payroll Driver. Ensure that the payroll driver for the relevant payroll area is defined
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