SAP ABAP Table/Structure Field TUNE1 - SYSID (TUNE1) is used by

• ENQU (2)
• Function Module (4)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	ENQU	E_BUFMAX	E_BUFMAX	STUN	BASIS	SAP_BASIS
2	ENQU	SYSID	SYSID