SAP ABAP Table PA0021 (HR Master Record: Infotype 0021 (Family)) is used by

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#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_HRPBSDE_ZFA_ZK01 Method: FIND_PERNR_BY_NAME_KIND	ZfA: ZK01 Notifications	P01O	HR	SAP_HRCDE