Vacancies
Use
Features
If integration with the Recruitment component is active, data on vacancies (that is, positions marked as vacant in infotype 1007) is transferred to Personnel Administration table T750X. When you create infotype 1007 records, you can enter the additional information required by table T750X.
Furthermore, the functions that are commonly used for maintaining vacancies occur in the corresponding Personnel Administration transactions (such as when a vacancy is delimited due to a vacant position being filled by a new employee). For further information see the Implementation Guide (IMG) under 
Organizational Management 
Infotype Settings Activate/Deactivate "Vacancy" Infotype
in the documentation on the switch PPVAC_PPVAC.