Message type: E = Error
Message class:  HRPAYDESV - Error Messages Germany Payroll, Social Insurance 
Message number: 028
Message text: Internal error number &
An unforeseen situation occurred during calculation of the income
threshold deficit for disruptive events. An internal error number was
triggered.
Processing cannot continue for the affected personnel number.
Error number 01
Cause:
Infotype 0123 (default disruptive event income threshold deficit) was
used to specify correction values for an income threshold deficit for
disruptive events that does not exist on key date &V2&. You can only use
specification type "Correction Values" to correct an existing income
threshold deficit for disruptive events.
Solution:
If you want to create the involved income threshold deficit for
disruptive events for key date &V2&, choose specification type "Starting
Values" in infotype 0123.
If you created the correction values for the incorrect legal
area/status, change the subtype in infotype 0123.
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 HRPAYDESV028, which indicates an "Internal error number &," typically arises in the context of payroll processing within the SAP HR module. This error can be caused by various issues, including data inconsistencies, configuration problems, or issues with the payroll schema. Possible Causes: Data Inconsistencies: There may be missing or incorrect data in the employee master records or payroll results.
Configuration Issues: Incorrect configuration in the payroll schema or rules can lead to internal errors during payroll processing. Custom Code: If there are custom enhancements or modifications in the payroll process, they might be causing the error. System Bugs: Occasionally, this error can be due to bugs in the SAP system or specific patches that need to be applied. Solutions: Check Payroll Results: Review the payroll results for the employee in question to identify any inconsistencies or missing data. Review Configuration: Ensure that the payroll schema and related configuration settings are correctly set up. This
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