Message type: E = Error
Message class:  HRGB_GBRTI - Messages for RTI 
Message number: 011
Message text: Employee Surname is mandatory
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The SAP error message HRGB_GBRTI011 indicates that the employee's surname is mandatory and has not been provided in the relevant data entry. This error typically occurs in the context of employee master data maintenance or during the processing of personnel actions in the Human Resources (HR) module of SAP.
Cause: Missing Surname: The primary cause of this error is that the surname field for the employee record is either empty or not filled in. Data Entry Error: There may have been an oversight during data entry where the surname was not entered. System Configuration: In some cases, the system configuration may require certain fields to be mandatory, and the surname field is one of them.
Solution: Check Employee Data: Navigate to the employee's master data record in SAP (usually through transaction codes like PA30 or PA40). Verify that the surname field is filled in correctly. Enter Missing Information: If the surname is missing, enter the correct surname in the
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