Message type: E = Error
Message class:  HRGB_GBRTI - Messages for RTI 
Message number: 138
Message text: If Company car details are amendend, this field must have a value.
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The SAP error message HRGB_GBRTI138 typically occurs in the context of managing employee benefits, specifically when dealing with company car details in the HR module. This error indicates that when certain details about a company car are amended, a specific field must be populated with a value.
Cause: The error is triggered when: You attempt to save or process changes to an employee's company car details without filling in a required field. The system has validation rules that enforce the presence of certain data when modifications are made to the company car information.
Solution: To resolve this error, follow these steps: Identify the Required Field: Check the specific field that is indicated as missing or empty. This could be a field related to the car's details, such as the car model, registration number, or any other relevant information. Fill in the Required Field: Once you identify the missing field, ensure that it is filled with the appropriate
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