Diagnosis
The NINO for this employee is unknown and the date of birth stored ininfotype Personal Details(0002) is the default value 01.01.1901.

System Response
The NI category is determined by the employee's age which the systemcalculates from the date of birth stored in the employee's Infotype 0002record.
The NI category determined by the system may not be accurate because thedefault date of birth 01.01.1901 has been used to calculate the age.

Procedure
Ignore the warning if you wish to continue processing the selected NIcategory you have allocated this employee.