Message type: E = Error
Message class:  HRPAYAT_0526 - Messages in Area for Master Data (Austria) IT 0526 
Message number: 403
Message text: For "Work Relationship Was Ended": Enter end date
You have selected the <LS>Work Relationship Was Ended</> field, but you
have not entered the date on which the work relationship ended.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Enter the date on which the work relationship ended.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message HRPAYAT_0526403, which indicates "Work Relationship Was Ended: Enter end date," typically occurs in the context of personnel administration or payroll processing within the SAP Human Capital Management (HCM) module. This error suggests that there is an issue with the work relationship of an employee, specifically that the system requires an end date for a work relationship that has been marked as ended.
Cause: Missing End Date: The most common cause of this error is that the employee's work relationship (such as employment or contract) has been marked as ended, but the system does not have an end date recorded. Incorrect Data Entry: There may have been an oversight during data entry, where the end date was not provided when the work relationship was terminated.
Configuration Issues: There could be configuration issues in the SAP system that are causing the system to expect an end date when it should not.
Solution: Enter End
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