SAP ABAP Table KEYCHECK (Control String for Checking the Key) is used by

• Class (4)
• Function Module (6)
• Program (4)
• Table (1)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	DD_TABL_INNER_ACT	DD: inner activation program	SDTB	BASIS	SAP_BASIS
2	Function Module	DD_TABT_INNER_ACT	DD: inner activation program for technical settings	SDTB	BASIS	SAP_BASIS
3	Function Module	DD_TBFD_CHK_KEY	Prüft den Schlüssel einer Tabelle	SDTB	BASIS	SAP_BASIS
4	Function Module	DD_TBFD_CHK_KEY VALUE(KEYC) LIKE KEYCHECK	Prüft den Schlüssel einer Tabelle	SDTB	BASIS	SAP_BASIS
5	Function Module	DD_TBFD_CHK_SINGLE_FIELD	DD_TBFD_CHK_SINGLE_FIELD	SDTB	BASIS	SAP_BASIS
6	Function Module	RSDG_DDIC_CHECK_TAB_LEN	Checks (Key) Length of Table Fields	RSD	RS_BW_STRUPAK	SAP_BW