Data for personnel number &1 is incomplete on &2

Either infotype 0001 'Organizational Assignment' or infotype 0002
'Personal Data' is missing for the employee. On this occasion it is a
question of a data inconsistency, the master record for this personnel
number was created incorrectly.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.