Message type: E = Error
Message class:  HRPAYAT_GMV - Messages for Joint Taxation 
Message number: 100
Message text: 100-199: Reserved for yearly export
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The SAP error message HRPAYAT_GMV100 with the code range 100-199, specifically "Reserved for yearly export," typically indicates that there is an issue related to the yearly export of payroll data in the SAP HR module, particularly for the Austrian payroll (as suggested by the "AT" in the message).
Cause: Yearly Export Process: This error usually arises when the system is trying to execute a process that is reserved for the yearly export of payroll data, but the conditions for that process have not been met.
Configuration Issues: There may be configuration settings in the payroll module that are not correctly set up for the yearly export. Data Completeness: The data required for the yearly export may be incomplete or missing, leading to the error. Timing Issues: The error may occur if the export is attempted outside of the designated time frame for yearly payroll processing.
Solution: Check Configuration: Review the configuration settings for the payroll module to
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