SAP ABAP Data Element UPLKN (Node number of the sub-operation) is used by

• Table (3)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Table	RC27A - UPLKN	Task lists: Work area of preceeding op. for milestones	CP	APPL	SAP_APPL
2	Table	RC27A - UPLKN_PRE	Task lists: Work area of preceeding op. for milestones	CP	APPL	SAP_APPL
3	Table	RCPLS - UPLKN	Sort criterion for dialog table for task lists	CP	APPL	SAP_APPL