SAP ABAP Table/Structure Field PA0001 - PERNR (PA0001) is used by

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#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	TYPE	PBE01	PBE01	PC12	HR	SAP_HRCBE
2	TYPE	TPTDW	TPTDW	PTDW	HR	SAP_HRRXX