Message type: E = Error
Message class:  3I - HR-PT: Messages for Portugal 
Message number: 105
Message text: Incorrect check digit for social security no.
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The SAP error message 3I105: Incorrect check digit for social security number typically occurs when the system validates a Social Security Number (SSN) and finds that the check digit does not match the expected value. This error is often encountered in modules that deal with employee data, such as Human Capital Management (HCM).
Cause: Incorrect SSN Entry: The most common cause is that the SSN has been entered incorrectly. This could be due to typographical errors or incorrect data entry. Invalid Format: The SSN may not be in the correct format (e.g., missing digits, incorrect number of digits). Check Digit Calculation: The check digit is calculated based on the other digits in the SSN. If the SSN is incorrect, the calculated check digit will not match the one provided. Data Migration Issues: If data has been migrated from another system, there may be inconsistencies or errors in the SSN data.
Solution: Verify SSN: Check the SSN entered
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