Message type: E = Error
Message class:  HRPYO_SCH - Payroll Scheduler Messages 
Message number: 121
Message text: Working days in cycle &1 lesser than rule value &2 configured for step &3
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The SAP error message HRPYO_SCH121 indicates that there is a discrepancy between the number of working days configured in a specific cycle and the rule value set for a particular step in the HR (Human Resources) module, specifically in the context of personnel administration or time management.
Cause: The error occurs when the number of working days defined in the cycle (denoted as &1) is less than the rule value (denoted as &2) that has been configured for a specific step (denoted as &3). This typically happens in scenarios involving: Time Evaluation: When the system evaluates time data and finds that the working days in the defined cycle do not meet the minimum requirements set by the rules.
Configuration Issues: Incorrect configuration of the work schedule, rules, or cycles in the system. Data Entry Errors: Incorrect data entry in the employee's time management records or work schedule.
Solution: To resolve this error, you can take the following
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